222  Key Title (R)

Record Type


Input Standards

Field (Full/Minimal)
ISSN National Centers use only/ISSN National Centers use only
1st Indicator  Undefined
blank character Undefined
2nd Indicator  Nonfiling characters
0 No nonfiling characters
1-9 Number of nonfiling characters present
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards (Full/Minimal)
ǂa Key title (NR) Mandatory/Mandatory
ǂb Qualifying information (NR) Required if applicable/Required if applicable
ǂ6 Linkage (NR) System supplied/System supplied
ǂ8 Field link and sequence number (R) Optional/Optional


ISSN national centers use field 222 for a unique title assigned to a continuing resource (serial or integrating resource) in conjunction with an International Standard Serial Number in field 022. The title is formed from title information transcribed from a piece of the continuing resource and is constructed with qualifiers to make it unique when necessary.

National centers assign ISSNs and key titles. You may enter the ISSN and key title if you are inputting a new record and the ISSN and key title are clearly labeled on the item.

If you are inputting a record for a microform or photocopy reproduction, you may transfer the ISSN and key title from the record for the original item to the record for the reproduction.

For information on punctuation, see the Punctuation section below.

1st Indicator

Undefined. The 1st indicator position is undefined and contains a blank.

blank character


2nd Indicator

Nonfiling characters. The number of character positions associated with a definite or indefinite article (e.g., An or The) at the beginning of a title and that are disregarded in sorting and filing processes.


No nonfiling characters. No initial article character positions are disregarded. Use value 0 if the title does not begin with an article.

Diacritical marks or special characters at the beginning of a field that does not begin with an initial article are not counted as nonfiling characters.


Number of nonfiling characters present. A field begins with a definite or indefinite article that is disregarded in sorting and filing processes. Enter the number of characters in the article, plus spaces, punctuation, diacritical marks and special characters that precede the first significant word.

Any diacritical mark or special character associated with the first filing character is not included in the count of nonfiling characters.


ǂa Key title

The key title.

222   0 Soviet astronomy letters
222   0 Municipal salary survey. Bench-mark jobs
222   0 Report - North Dakota State Department of Health
222   0 LDR. Lawyers desk reference
222   0 Journal of polymer science. Part B, Polymer letters
ǂb Qualifying information

Information that qualifies the title to make it unique.

222   0 Medicina ǂb (Madrid)
222   0 Medicina ǂb (Tokyo)
222   0 Recherches ǂb (Paris. 1953)
222   0 Recherches ǂb (Paris. 1961)
ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not manually add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields.

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.


For records containing punctuation, follow these instructions:

  • Enclose the text in subfield ǂb in parentheses
  • Include incidental punctuation needed within any subfields, e.g., commas, periods (following abbreviations or initials), etc.
  • Omit punctuation preceding each subfield unless the preceding subfield ends with an ellipsis, exclamation point, hyphen, period (following an abbreviation or initial), question mark, closing bracket, or closing parenthesis
  • Omit the terminal period at the end of the field unless the last word is an abbreviation or initial
222   0 Bizarro ǂb (Burbank, Calif.)

For records containing minimal or no punctuation, include incidental punctuation needed within any subfields. Otherwise, omit the punctuation outlined above.

222   0 Bizarro ǂb Burbank, Calif.

For more information on punctuation, including OCLC policy, see section 2.8, Punctuation.


For indexing and searching information, see Searching WorldCat Indexes, field 222.


For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 222.