Index values and MARC fields in WorldCat.org and WorldCat Local
The following chart shows how WorldCat.org builds index values from the MARC fields listed to get the format/facet. Index values can be used to construct a search to return a certain format/facet.
For example, a search on x0:audiobook results in the following sub-facets: cassette, CD, LP, eAudiobook.
To see only cassettes, the search is x0:audiobook x4:cassette.
| FORMAT/FACET in WorldCat.org | INDEX VALUES | MARC RECORD CRITERIA | |||||
|---|---|---|---|---|---|---|---|
| x0: | x4: | Leader/06 | Leader/07 | Field 008 | Material Types | Other criteria or note | |
| Archival Material | Archv | p | |||||
| Downloadable Archival Material | Archv | Digital | p | 856/u is present and indicator 2 = blank or 0 | |||
| Article | ArtChap | a, t | a | ||||
| Chapter | ArtChap | Chptr | Not in WorldCat* | ||||
| Downloadable article | ArtChap | Digital | a, t | a | mt:url | 856/u is present and indicator 2 = blank or 0 | |
| Audiobook | Audiobook | i, j | mt:nsr | ||||
| CD | Audiobook | CD | i, j | mt:nsr, mt:cda | |||
| eAudiobook | Audiobook | Digital | i, j | 008/23=s | mt:nsr | 856/u is present and indicator 2 = blank or 0 | |
| LP | Audiobook | LP | i, j | mt:nsr, mt:lps | |||
| Cassette | Audiobook | Cassette | i, j | mt:nsr, mt:cas | |||
| Book | Book | a, t | m, c, d | 008/23=s | |||
| Braille | Book | Braille | a, t | m, c, d | |||
| Continually Updated Resource | Book | Continuing | a, t | i | |||
| eBook | Book | Digital | a, t | m, c, d | 856/u is present and indicator 2 = blank or 0 | ||
| Large Print | Book | LargePrint | a, t | m, c, d | mt:lpt | ||
| Microform | Book | Mic | a, t | m, c, d | mt:mic | ||
| Thesis/Dissertation | Book | thsis | a, t | m, c, d | mt:deg | ||
| Computer File | CompFile | m | Not mt:cgm, mt:imm, mt:ser | ||||
| Encylopedia | Encyc | Not in WorldCat* | |||||
| Game | Game | g, k, o, r | mt:phg | ||||
| Game | m | mt:cgm | |||||
| Video Game | Game | Digital | m | mt:cgm | 856/u is present and indicator 2 = blank or 0 | ||
| Image | Image | 2d | g, k, o, r | mt:ngr | No 856/u is present | ||
| Interactive Multimedia | IntMM | m | mt:imm | ||||
| Internet Resource | Web | Not in WorldCat* | |||||
| Website | Web | Ditigal | a, t | i | 008/23=s | 856/u is present and indicator 2 = blank or 0 | |
| Downloadable Image | Web | dwn2d | Not in WorldCat* | ||||
| Journal/Magazine | Jrnl | a, t | s, b | Not mt:new | |||
| Jrnl | m | mt:ser, not mt:new | |||||
| eJournal/eMagazine | Jrnl | Digital | a, t | Not mt:new | 856/u is present and indicator 2 = blank or 0 | ||
| Jrnl | Digital | m | mt:ser, not mt:new | 856/u is present and indicator 2 = blank or 0 | |||
| Kit | Kit | g, k, o, r | mt:kit | ||||
| Map | Map | e, f | |||||
| eMap | Map | Digital | e, f | 008/29=s | not mt:cdc | 856/u is present and indicator 2 = blank or 0 | |
| Music | Music | i, j | mt:msr | ||||
| CD | Music | CD | i, j | mt:msr: mt:cda | |||
| eMusic | Music | Digital | i, j | 008/23=s | mt:msr | 856/u is present and indicator 2 = blank or 0 | |
| LP | Music | LP | i, j | ||||
| Cassette | Music | Cassette | i, j | mt:msr mt:cas | |||
| Musical Score | MsScr | c, d | |||||
| Downloadable Musical Score | MsScr | Digital | c, d | 008/23=s | 856/u is present and indicator 2 = blank or 0 | ||
| Newspaper | News | a, t | s, b | mt:new | |||
| News | m | mt:ser, mt:new | |||||
| eNewspaper | News | Digital | a, t | s, b | 008/23=s | mt:new | 856/u is present and indicator 2 = blank or 0 |
| Object | Object | g, k, o, r | mt:art, not mt:phg, mt:toy | ||||
| Sound Recording (Other) | Snd | Not in WorldCat* | |||||
| Toy | Toy | g, k, o, r | mt:toy | ||||
| Video | Video | g, k, o, r | mt:vid | ||||
| Bluray | Video | Bluray | g, k, o, r | mt:blu | |||
| eVideo | Video | Digital | g, k, o, r | 008/29=s | mt:vid | 856/u is present and indicator 2 = blank or 0 | |
| DVD | Video | DVD | g, k, o, r | mt:dvv | |||
| Film | Video | Film | g, k, o, r | mt:mot | |||
| VHS | Video | VHS | g, k, o, r | mt:vhs | |||
| Visual material | Vis | g, k, o, r | Not mt:vid, mt:ngr, mt:phg, mt:toy | ||||
| Downloadable Visual Material | Vis | Digital | g, k, o, r | 856/u is present and indicator 2 = blank or 0 | |||
* Used when searching non-OCLC licensed databases
See also: Index labels and examples of an expert search in WorldCat.org and WorldCat Local.