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856  Electronic Location and Access (R)

Input Standards

Required if applicable/Required if applicable
1st Indicator  Access method
blank character No information provided
0 Email
1 FTP
2 Remote login (Telnet)
3 Dial-up
4 HTTP (Hypertext Transfer Protocol)
7 Method specified in subfield ǂ2
2nd Indicator  Relationship
blank character No information provided
0 Resource
1 Version of resource
2 Related resource
8 No display constant generated
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa Host name (R) Optional/Optional
ǂb Access number (R) Optional/Optional
ǂc Compression information (R) Optional/Optional
ǂd Path (R) Optional/Optional
ǂf Electronic name (R) Optional/Optional
ǂh Processor of request (R) Optional/Optional
ǂi Instruction (R) Optional/Optional
ǂj Bits per second (NR) Optional/Optional
ǂk Password (NR) Optional/Optional
ǂl Logon (NR) Optional/Optional
ǂm Contact for access assistance (R) Optional/Optional
ǂn Name of location of host (NR) Optional/Optional
ǂo Operating system (NR) Optional/Optional
ǂp Port (NR) Optional/Optional
ǂq Electronic format type (NR) Optional/Optional
ǂr Settings (NR) Optional/Optional
ǂs File size (R) Optional/Optional
ǂt Terminal emulation (R) Optional/Optional
ǂu Uniform Resource Identifier (R) Required if applicable/Required if applicable
ǂv Hours access method available (R) Optional/Optional
ǂw Record control number (R) Optional/Optional
ǂx Nonpublic note (R) Optional/Optional
ǂy Link text (R) Optional/Optional
ǂz Public note (R) Optional/Optional
ǂ2 Access method (NR) Optional/Optional
ǂ3 Materials specified (NR) Required if applicable/Required if applicable

Definition

The information required to locate and access electronic resources, including online resources. Use field 856 in a bibliographic record for a resource when that resource or a subset of it is available electronically. In addition, use field 856 to locate and access a related electronic resource or an electronic version of a non-electronic resource described in the bibliographic record.

Repeat field 856 when the location data elements vary (the Uniform Resource Identifier (URI) in subfield ǂu or subfields ǂa, ǂb, and ǂd, when used) and when more than one access method is used. Repeat field 856 also when different portions of the item are available electronically, mirror sites are recorded, different formats/resolutions with different URIs are indicated, or related items are recorded.

The data in field 856 may be a URI recorded in subfield ǂu or the necessary locator information may be parsed into separate defined subfields. Note that separate subfields for locator data were provided when this field was first established in 1993, but these are seldom used in current cataloging. An access method, or protocol used, is given as a value in the first indicator position (if the access method is email, FTP, remote login (telnet), dial-up, or HTTP) or in subfield ǂ2 (if the access method is anything else). The access method is the first element of a Uniform Resource Locator (URL). The field may also include a Uniform Resource Name (URN), e.g., a Digital Object Identifier (DOI) or handle.

Guidelines

Input generally-accessible URIs whenever possible. Do not input an institution-specific URI in field 856 in WorldCat master records unless no other URI is available. Instead, it may be possible to omit the institution or proxy server data, leaving only the base URI or the base URI plus item identifier. Sometimes it is possible to otherwise manipulate the URI to result in a useable address.

856 4 0 ǂu http://ezproxy.viu.ca/login?url=http://muse.jhu.edu/books/9780812204896/
[Institution-specific URI, including proxy server data]
856 4 0 ǂ3 Project MUSE ǂu http://muse.jhu.edu/books/9780812204896/
[The manipulated and now generally-accessible URI, after removing the proxy server data]

For any access method, a URI is generally recorded in subfield ǂu. Separate subfields may be used if it is desirable to display data in a particular way. The most commonly used data elements in field 856 are as follows:

  • 1st indicator = 4 for HTTP
  • Subfield ǂu = [HTTP URL]
  • Subfield ǂ3: data specifying to what the URI refers, if applicable

In the cooperative environment of WorldCat, you should follow the Provider-Neutral E-Resource MARC Record Guide: P-N/RDA Version (http://www.loc.gov/aba/pcc/scs/documents/PN-RDA-Combined.docx) when cataloging electronic resources. Regarding field 856, the P-N Guidelines specify:

  • Use subfield ǂu for URLs that are general, not institution-specific.
  • Do not use subfield ǂz for information that is institution-specific.
  • Subfield ǂ3 may be used to record package/provider name.
856 4 0 ǂ3 CRCnetBASE ǂu http://www.crcnetbase.com/isbn/9780203417461
856 4 0 ǂ3 Ebook Library ǂu http://public.eblib.com/choice/publicfullrecord.aspx?p=292768
856 4 0 ǂ3 ebrary ǂu http://site.ebrary.com/lib/alltitles/docDetail.action?docID=10161434

A URI in subfield ǂu is required unless electronic location and access information is parsed into separate subfields, in which case no single subfield is required. When using this parsed technique, the subfields used largely depend on the access method indicated in the 1st indicator or in subfield ǂ2 when the 1st indicator is 7. See the Library of Congress Guidelines for the Use of Field 856 (http://www.loc.gov/marc/856guide.html) for additional information.

For URIs that are no longer active, you may follow RDA LC-PCC PS 4.6.1.4.

  • Use an Internet search engine to determine if the resource described in the record is now available at a different URI. If the resource is found, update field 856 to reflect the new URI.
  • If searching indicates that the resource is no longer available, edit field 856 to reflect this fact by changing subfield ǂu to subfield ǂz, modifying the subfield to show that the resource is no longer available, indicating the last date that the resource was searched.
856 4   ǂz Electronic address (http://unicorn.csc.noaa.gov/docs/czic/TJ163.e.B87_1977/2972.pdf) not available when searched on 12/16/2014

If the original URI remains active, but the original resource is no longer available (that is, the URI represents an entirely different resource from the one described in the record, not merely a new iteration of it), treat field 856 as described above and create a new bibliographic record for the new resource, if appropriate.

1st Indicator

Access method. The access method to the electronic resource. If the resource is available by more than one access method, repeat the field with data appropriate to each method. The methods defined are the main TCP/IP (Transmission Control Protocol/Internet Protocol) protocols.

When recording a URI in subfield ǂu, the value corresponds to the access method (URI scheme) which is also the first element in the URI string.

The access methods with indicator values defined here, as well as those with coded values used in subfield ǂ2, are specified in Uniform Resource Locators (URL) (http://www.ietf.org/rfc/rfc1738.txt), a product of the Uniform Resource Identifiers Working Group of the Internet Engineering Task Force (IETF). The Internet Assigned Numbers Authority (IANA) (http://www.iana.org/) maintains a registry of URL schemes (http://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml) and defines the syntax and use of new schemes.

 
blank character

No information provided. No information about the access method is provided. Value blank ( blank character ) may be used if a URN alone is recorded in subfield ǂu.

856     doc1.lbfl.li ǂd /abb ǂf 960063.tif ǂz Image - Map, 1655
 
0

Email. Access to the resource is through electronic mail (email). Include information on subscribing to an electronic journal or electronic forum through software intended to be used by an email system.

856 0   ǂu mailto:ejap@phil.indiana.edu ǂi ejap subscription
 
1

FTP. Access to the resource is through File Transfer Protocol (FTP).

856 1   ǂu ftp://path.net/pub/docs/urn2urc.ps
856 1   ǂu ftp://info.cern.ch/pub/www/doc;type=d
 
2

Remote login (Telnet). Access to the resource is through remote login (Telnet). You may include information in the subfields to enable users to connect to the resource electronically. This is equivalent to a URI telnet scheme.

856 2   ǂu telnet://pucc.princeton.edu
 
3

Dial-up. Access to the electronic resource is through a conventional telephone line (dial-up). Use subfields to record information that may enable the user to connect to the resource.

856 3   locis.loc.gov ǂb 140.147.254.3 ǂm lconline@loc.gov ǂt 3270 ǂt line mode (e.g., vt100) ǂv M-F 6:00 a.m.-21:30 p.m. USA EST, Sat 8:30-17:00 USA EST, Sun. 13:00-17:00 USA EST
 
4

HTTP (Hypertext Transfer Protocol). Access to the electronic resource is through Hypertext Transfer Protocol.

856 4 0 ǂu http://jefferson.village.virginia.edu/pmc/contents.all.htm
 
7

Method specified in subfield ǂ2 . Access to the resource is through a method other than the defined values and for which an identifying code is given in subfield ǂ2.

856 7   ǂ3 b&w film copy neg. ǂd dag ǂf 3d01926 ǂ2 file

2nd Indicator

Relationship. The relationship between the electronic resource at the location identified in field 856 and the item described in the record as a whole. Use subfield ǂ3 to provide further information about the relationship if it is not a one-to-one relationship.

 
blank character

No information provided. No information is provided about the relationship of the electronic resource to the bibliographic item described by the record. For instance, use blank ( blank character ) when the subfield ǂz contains a URI that is no longer accessible but there is another 856 with a currently accessible URI.

245 0 0 Astrophysics Data System article service : ǂb ADS.
856 4   ǂ3 Table of contents service ǂu http://adsabs.harvard.edu/article%5Fservice.html
 
0

Resource. The electronic location in field 856 is for the same resource described by the record as a whole. In this case, the item represented by the bibliographic record is an electronic resource. If the data in field 856 relate to a constituent unit of the resource represented by the record, use subfield ǂ3 to specify the portion(s) to which the field applies. The display constant Electronic resource: may be provided.

245 1 0 Proceedings of the Seminar on Cataloging Digital Documents, October 12-14, 1994 / ǂc University of Virginia Library, Charlottesville, and the Library of Congress.
856 4 0 ǂu http://lcweb.loc.gov/catdir/semdigdocs/seminar.html
 
1

Version of resource. The location in field 856 is for an electronic version of the resource described by the record. In this case, the item represented by the bibliographic record is not electronic, but an electronic version is available. If the data in field 856 relate to a constituent unit of the resource represented by the record, use subfield ǂ3 to specify the portion(s) to which the field applies, e.g. table of contents. The display constant Electronic version: may be provided.

856 4 1 ǂ3 Table of contents ǂu http://catdir.loc.gov/catdir/toc/ecip0616/2006020887.html
856 4 1 ǂ3 Index ǂu http://archive.sclqld.org.au/excerpt/b10901073/index.pdf
245 0 0 American quarterly.
856 4 1 ǂ3 Project Muse ǂu http://muse.jhu.edu/journals/american_quarterly/
[Bibliographic record is for print version of resource. URI is for the online version of resource.]
 
2

Related resource. The location in field 856 is for an electronic resource related to the bibliographic item described by the record. In this case, the item represented by the bibliographic record is not the electronic resource itself. Use subfield ǂ3 to further characterize the relationship between the electronic item identified in field 856 and the item represented by the bibliographic record as a whole. The display constant Related electronic resource: may be provided.

Limit use to electronic resources that have a specific bibliographic relationship to the resource described in the body of the record. This would include links to such resources as a finding aid for an archival collection or the Web site of a musical group on a bibliographic record for a sound recording. This would not, however, include Web sites that have merely a general subject relationship to the resource.

245 0 0 ǂk Papers, ǂf 1932-1970 ǂg (bulk 1932-1965)
856 4 2 ǂ3 Finding aid ǂu http://lcweb2.loc.gov/ammem/ead/jackson.sgm
245 1 0 White blood cells / ǂc the White Stripes.
856 4 2 ǂ3 Song lyrics ǂu http://www.whitestripes.com/discs/wbc.html
 
8

No display constant generated. The value that specifies that a display constant is not generated.

856 4 8 ǂu http://www.designandhealth.com

Subfields

 
ǂa Host name

The fully qualified domain (host name) of the electronic location. Repeat subfield ǂa if there is more than one address for the same host. Subfield ǂa is unlikely to be used in current cataloging.

856 1   harvarda.harvard.edu ǂa harvarda.bitnet
ǂb Access number

The access number associated with a host. Use for Internet Protocol (IP) numeric address for an Internet resource. Use for a telephone number if access is through a telephone line (dial-up). This data may change frequently and may be generated by the system, rather than statically stored. Repeat subfield ǂb if all the other information in the field applies. Subfield ǂb is unlikely to be used in current cataloging.

856 2   anthrax.micro.umn.edu ǂb 128.101.95.23
ǂc Compression information

The information about the compression of a file. If a specific program is required to decompress the file, it is noted here. Repeat subfield ǂc if two compression programs are used. Enter the latest compression first. Subfield ǂc is unlikely to be used in current cataloging.

856 1   maine.maine.edu ǂc Must be decompressed with PKUNZIP ǂf resource.zip
ǂd Path

The series of logical directory and subdirectory names in which the file is stored. Use subfield ǂf for the file name itself. Use subfield ǂd for a surrogate path to the host in which complete and current access information is stored in a locator table. Subfield ǂd is unlikely to be used in current cataloging.

856 1   wuarchive.wust1.edu ǂd /aii/admin/CAT.games ǂf mac-qubic.22.hqx
ǂf Electronic name

The electronic name of a file as it exists in the directory/subdirectory indicated in subfield ǂd on the host identified in subfield ǂa. Repeat subfield ǂf if a single logical file has been divided into parts and stored under different names. In this case, the separate parts should constitute a single bibliographic item. In all other cases, for a file that may be retrieved under different filenames, use multiple occurrences of field 856, each with its corresponding electronic name in subfield ǂf. Subfield ǂf is unlikely to be used in current cataloging.

856 1   wuarchive.wust1.edu ǂd mirrors/info-mac/util ǂf color-system-icons.hqx

File names may include wildcard characters (e.g., * or ?). Use subfield ǂz to explain how the files are named.

ǂh Processor of request

The user name or processor of the request. Use for the data that precedes the at sign (@) in the host address. Subfield ǂh is unlikely to be used in current cataloging.

856 0   uicvm.bitnet ǂf AN2 ǂh Listserv
ǂi Instruction

The instruction or command needed for the remote host to process a request. Subfield ǂi is unlikely to be used in current cataloging.

856 0   uccvma.bitnet ǂf IR-L ǂh Listserv ǂi subscribe
ǂj Bits per second

The lowest and highest number of bits (binary units) of data that can be transmitted per second when connected to a host.

The syntax for recording the number of bits per second (BPS) is as follows: <Lowest BPS>-<Highest BPS>

  • If only the lowest is given: <Lowest BPS>-
  • If only the highest is given : -<Highest BPS>

Subfield ǂj is unlikely to be used in current cataloging.

856 0   ǂb 1-202-707-2316 ǂj 2400-9600 ǂn Library of Congress, Washington, DC ǂo UNIX ǂr E-7-1
ǂk Password

The password required to access the electronic resource. An FTP site may require the user to enter an Internet Protocol address or may require a specific password. Electronically accessed catalogs may also require a password. Use for general passwords, not for security passwords. Omit subfield ǂk if a system that requires a password will accept anything entered as valid. Use subfield ǂz for password instructions. Subfield ǂk is unlikely to be used in current cataloging.

856 1   harvarda.harvard.edu ǂk guest
ǂl Logon

The characters needed to connect (e.g., logon or login) to an electronic resource or FTP site. An account number required for login may also be indicated. For many general-use File Transfer Protocol servers, access is gained by entering the string anonymous. Use to record general-use logon strings which do not require special security. Do not use for security passwords. Subfield ǂl is unlikely to be used in current cataloging.

856 1   umnvm.bitnet ǂl anonymous
ǂm Contact for access assistance

The contact person at the host specified in subfield ǂa. For addresses relating to the content of the resource itself (i.e., the item represented by the title recorded in field 245) rather than access assistance, use field 270. Also use field 270 if the address data is the same. Subfield ǂm is unlikely to be used in current cataloging.

856 2   gopac.berkeley.edu ǂm Roy Tennant
ǂn Name of location of host

The conventional name of the location of the host in subfield ǂa, including its physical (geographic) location. Subfield ǂn is unlikely to be used in current cataloging.

856 2   pucc.princeton.edu ǂn Princeton University, Princeton, N.J.
ǂo Operating system

The operating system used by the host specified in subfield ǂa. Conventions for the path and filenames may be dependent on the operating system of the host. For the operating system of the resource itself (i.e., the item represented by the title recorded in field 245), use field 753 subfield ǂc. Subfield ǂo is unlikely to be used in current cataloging.

856 1   seq1.loc.gov ǂd /pub/soviet.archive ǂf k1famine.bkg ǂn Library of Congress, Washington, DC ǂo UNIX
ǂp Port

The part of the address that contains the process or service in the host. Subfield ǂp is unlikely to be used in current cataloging.

856 2   madlab.sprl.umich.edu ǂn University of Michigan Weather Underground ǂp 3000
ǂq Electronic format type

The electronic format type which is the data representation of the resource, e.g., text/html, ASCII (American National Standard Code for Information Interchange), executable application, JPEG image, or Postscript file. It provides information to allow people or machines to make decisions about the usability of the encoded data (e.g., the hardware or software required to display or to execute the data). The electronic format type also determines the file transfer mode or how the data is transferred through the network.

Usually, a text file can be transferred as character data, which generally restricts the text to characters in the ASCII character set (i.e., the basic Latin alphabet, digits 0–9, most punctuation marks, and a few special characters). Text files with characters outside the ASCII set or non-textual data (e.g., computer programs or images) must be transferred using another binary mode. Electronic format type may be taken from enumerated lists such as registered Internet Media Types (MIME types).

Subfield ǂq is unlikely to be used in current cataloging.

856 4 0 ǂu http://www.cdc.gov/ncidod/EID/eid.htm ǂq text/html
ǂr Settings

The settings used for transferring data.

  • Parity: the parity checking technique used. Parity values are:
    • E for even
    • M for mark
    • N for none
    • O for odd
    • S for space
  • Number Data Bits: the number of bits per character.
  • Number Stop Bits: the number of bits to signal the end of a byte.

The syntax is as follows: <Parity>-<Number Data Bits>-<Number Stop Bits>

  • If only the parity is given, the other elements of settings and their related hyphens are omitted: <Parity>
  • If one of the other two elements is given, the hyphen for the missing element is recorded in its proper position:
    • <Parity>-<Number Data Bits>-
    • <Parity>--<Number Stop Bits>

Subfield ǂr is unlikely to be used in current cataloging.

856 3   ǂb 1-202-707-2316 ǂj 2400-9600 ǂn Library of Congress, Washington, DC ǂo UNIX ǂr E-7-1 ǂt vt100 ǂz Requires logon and password
ǂs File size

The size of the file stored under the file name indicated in subfield ǂf. Size is generally expressed in terms of 8-bit bytes (octets). Repeat subfield ǂs and place it after the subfield ǂf to which it applies, if needed. Do not enter this information for electronic journals since the field relates to the entire title, not to a particular issue. Subfield ǂs is unlikely to be used in current cataloging.

856 0   keptvm.bitnet ǂf acadlist file1 ǂs 34,989 bytes ǂf acadlist file2 ǂs 32,876 bytes ǂf acadlist file3 ǂs 23,987 bytes
ǂt Terminal emulation

The emulation supported to specify a remote login. Use with 1st indicator value 2. Subfield ǂt is unlikely to be used in current cataloging.

856 2   maine.maine.edu ǂn University of Maine ǂt 3270
ǂu Uniform Resource Identifier

The Uniform Resource Identifier (URI), for example a URL or URN, provides electronic access data in a standard syntax. Use for automated access to an electronic item using one of the Internet protocols or by resolution of a URN. The structure of field 856 allows for the creation of a URI from the concatenation of the other 856 subfields. Use subfield ǂu instead of those separate subfields or in addition to them. Repeat subfield ǂu if digital object has multiple identifiers (URIs).

856 1   ǂu ftp://path.net/pub/docs/urn2urc.ps
856 4 0 ǂu http://oclc.org/bibformats/en.html
856 4 0 ǂ3 PsycBOOKS ǂu http://content.apa.org/books/2009-08050-000
856 4 0 ǂ3 Google ǂu http://books.google.com/books?id=7sfmOiy-1IkC
856 4 0 ǂ3 OverDrive (Kindle) ǂu http://www.contentreserve.com/TitleInfo.asp?ID={72D100F9-4E4A-4C23-9646-12C8F28B21F3}&Format=420
856 4 0 ǂu http://bibpurl.oclc.org/web/24285/2008/wp08208.pdf ǂu http://www.imf.org/external/pubs/ft/wp/2008/wp08208.pdf
856 4 0 ǂ3 CRCnetBASE ǂu http://dx.doi.org/10.1201/b15870
856 4 1 ǂu http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:bvb:12-bsb00010820-1
856 4 0 ǂu http://hdl.loc.gov/loc.rbc/jeff.16823
856 4 0 ǂu http://www.ncjrs.gov/pdffiles1/nij/209800.pdf ǂu http://purl.access.gpo.gov/GPO/LPS73296

Input generally-accessible URIs whenever possible. Do not an input institution-specific URI in field 856 in WorldCat master records unless no other URI is available, following the instructions in the Guidelines.

For more information about subfield ǂu, see Control Subfields.

ǂv Hours access method available

The hours that access to the electronic resource indicated in field 856 is available. For systems and services, use field 307, not subfield ǂv. Subfield ǂv is unlikely to be used in current cataloging.

856 2   pac.carl.org ǂb 192.54.81.128 ǂm CARL Situation Room ǂm help@CARL.org ǂn CARL Systems, Inc., Denver, CO ǂv 24 hours
ǂw Record control number

The system control number of the related record. Precede the number with a MARC code for the agency to which the control number applies. Enclose the MARC agency code in parentheses. The data in subfield ǂw links field 856 to the MARC record having the same data in a control number field. See MARC Code List for Organizations (http://www.loc.gov/marc/organizations/orgshome.html), which includes links to Canadian, United Kingdom, and German MARC Organization Code lists. Subfield ǂw is unlikely to be used in current cataloging. Prefer use of field 776 for links to related records.

856 4 2 ǂz Online Version (PDF), Volume 1 ǂu http://ntl.bts.gov/lib/45000/45700/45704/Hybrid_Propagation_Model_Vol1.pdf ǂw (OCoLC)812477708
ǂx Nonpublic note

A note pertaining to the electronic location of the source identified in the field that is in a form not adequate for public display. A nonpublic note may contain processing information about the file at the location specified.

856 1   wuarchive.wust1.edu ǂc decompress with PKUNZIP.exe ǂd /mirrors2/win3/games ǂf atmoids.zip ǂx cannot verify because of transfer difficulty
ǂy Link text

The link text that is used for display in place of the URI in subfield ǂu. Do not input subfield ǂy in master records. When subfield ǂy is present in local editing, applications should use the contents of subfield ǂy as the link, instead of the content of subfield ǂu when linking to the destination in subfield ǂu. Subfield ǂu is independent of the 2nd indicator value.

856 4   ǂu http://fdl.fcla.edu:80/cgi-bin/cgiwrap/fdl/fdlcgi/ZKVIEWFA00000011/file2.pdf ǂy Electronic resource (PDF)
ǂz Public note

A note pertaining to the electronic location of the source identified in the field that is in a form adequate for public display. Examples include subscription information or access restrictions.

856 4   ǂz Electronic address (http://unicorn.csc.noaa.gov/docs/czic/TJ163.e.B87_1977/2972.pdf) not available when searched on 12/16/2014
ǂ2 Access method

The code defined for use with 1st indicator value 7. Use subfield ǂ2 to record access methods other than the main TCP/IP protocols specified in the 1st indicator. Code from: Electronic Access Methods Code List (http://www.loc.gov/standards/valuelist/electronaccess.html).

The data in this subfield correspond with the access schemes specified in Uniform Resource Locators (URL) (http://www.ietf.org/rfc/rfc1738.txt), a product of the Uniform Resource Identifiers Working Group of the Internet Engineering Task Force (IETF). The Internet Assigned Numbers Authority (IANA) (http://www.iana.org/) maintains a registry of URL schemes (http://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml) and defines the syntax and use of new schemes.

856 7 0 ǂu gopher://gopher.lib.virginia.edu:70/00/alpha/bmcr ǂ2 gopher
856 7 0 ǂu sip:alice@atlanta.com?subject=project%20x&priority=urgent ǂ2 sip
ǂ3 Materials specified

For information about subfield ǂ3, see Control Subfields.

856 0   ǂ3 Finding aid to the Edgar F. Kaiser papers ǂa gopher.berkeley.edu ǂb 128.224.55 ǂk guest ǂl anonymous ǂm Reference Services, The Bancroft Library, University of California, Berkeley, CA 94720, tel. 510-642-6481 ǂn The Library, University of California, Berkeley ǂo UNIX ǂp 70 ǂq binary ǂs 2,394,394,444 ǂx The finding aid to the Kaiser papers is currently under revision. ǂz For further information about shipbuilding files, contact The Bancroft Library Reference
856 4 1 ǂ3 Table of contents ǂu http://catdir.loc.gov/catdir/toc/ecip0413/2004000025.html

Indexing

For indexing and searching information, see Searching WorldCat Indexes, field 856.

This page last revised: July 28, 2016