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MARC21 basics
Fixed field and Leader
- The fixed fields and leader provide the machine with easily addressed fields containing short
codes of a fixed length which define elements such as the type of material described in the record
(books, serials, graphic materials, music, computer files, etc.), the encoding level of the description
(CIP, full level LC, minimal level), rules used, language of the piece, and so on. These are useful
to OPAC users as qualifiers for their searches. USMARC presents the leader as the first 23 bytes of
a record and the fixed fields as 001-008. There are no indicators nor subfields, even though OCLC
presents 007 with the latter for ease of data entry. DRA, Unicorn, and OCLC present the leader and 008 fixed
length fields in a block at the top of the MARC record with mnemonic tags to aid in data entry.
Variable data fields
- The variable length fields are like memo fields within a MARC record. They are not so easily addressed
as the fixed fields, but then they must be capable of enlarging or shrinking to fit the amount of data
a work presents to the descriptive cataloger. This is where the author, publisher, title, paging, subjects
and notes are presented.
- All fields except 00x are variable data fields
- Four levels of content designation
- Field tags
- Indicators
- Subfield codes
- Field terminator
- Grouped in blocks according to function:
- 0XX = Control information, numbers, and codes
- 1XX = Main entry
- 2XX = Titles and title paragraph (title, edition, imprint)
- 3XX = Physical description, etc.
- 4XX = Series statements
- 5XX = Notes
- 6XX = Subject access fields
- 7XX = Added entries other than subject or series; linking fields
- 8XX = Series added entries, etc.
- 9XX = Reserved for local implementation
- Fields subject to authority control have parallels of content designation. The
following meanings are generally given to the final two characters of the tag:
- X00 = Personal names
- X10 = Corporate names
- X11 = Meeting names
- X30 = Uniform titles
- X40 = Bibliographic titles
- X50 = Topical terms
- X51 = Geographic names
Quickguide to frequently used MARC fields and subfields for printed monographs
Leader (first 3 elements) and fixed fields displayed in WorkFlows
| Rec_Type: a |
Bib_Lvl: m |
Enc_Lvl: I |
| Desc: a |
TypeCtrl: |
Entrd: 050825 |
| Dat_Tp: s |
Date1: 2005 |
Date2: |
| Ctry: nyu |
Lang: eng |
Mod_Rec: |
| Source: |
Illus: af |
Audience: |
| Repr: |
Cont: b |
GovtPub: |
| ConfPub: 0 |
Festschr: 0 |
Indx: 1 |
| Fiction: 0 |
Biog: |
|
Variable fields displayed in WorkFlows
| 010 |
|
|aLibrary Congress Control Number (LCCN) |
| |zCanceled/invalid LC Control Number |
| 040 |
|
|aCataloging agency (DLC) |
| |cTranscribing agency (DLC) |
| |dModifying agency (NRC) |
| 020 |
|
|aInternational Standard Bibliographic Number (ISBN) |
| |zCanceled/invalid ISBN |
| 022 |
|
|aInternational Standard Serial Number |
| |yIncorrect ISSN |
| |zCanceled ISSN |
| 041 |
0- |
|aLanguage of the main content |
| 1- |
|aLanguage of the translation |
| |
|hLanguage of the original |
| 050 |
|
|aLibrary of Congress class number |
| |bBook number/Cutter |
| 100 |
1- |
|aLast name, First name,|q(fuller form of name),|ddates. |
| 110 |
2- |
|aCorporate name in direct order.|bSubordinate unit. |
| 111 |
2- |
|aMeeting name in direct order|n(Number of meeting :|ddate :|cPlace of meeting. |
| 130 |
0- |
|aUniform title.|lLanguage.|sVersion.|fDate. |
| 240 |
10 |
|aUniform title.|lLanguage.|fDate. |
| 245 |
10 |
|aTitle proper. |
| |
|nNumber of part, |
| |
|pname of part |
| |
|h[GMD] : |
| |
|bsubtitle or other title information / |
| |
|cstatement of responsibility. |
| 246 |
30 |
|aPortion of title |
| 31 |
|aParallel title added entry. |
| 14 |
|aCover title added entry, with note. |
| 18 |
|aSpine title added entry, with note. |
| 250 |
|
|aEdition statement. |
| 260 |
|
|aPlace of publication :|bPublisher,|cdate of publication. |
| 300 |
|
|aExtent of item :|bill. ;|c(size) +|eaccompanying material. |
| 440 |
0 |
|aSeries title,|x(ISSN),|vvolume designation |
| 500 |
|
|aGeneral notes. |
| 538 |
|
|aSystem requirements note for accompanying materials. |
| 546 |
|
|aLanguage note. |
| 504 |
|
|aIncludes bibliographical references and index. |
| 520 |
|
|aSummary notes. |
| 505 |
|
|aContents notes. |
| 600 |
10 |
|aPerson as subject. |
| 610 |
20 |
|aCorporate body as subject. |
| 611 |
20 |
|aConference as subject. |
| 630 |
00 |
|aUniform title as subject. |
| 650 |
-0 |
|aTopical LC subject heading |
| |
|vGenre subdivision |
| |
|xTopical subdivision |
| |
|yChronological subdivision |
| |
|zGeographic subdivision |
| 651 |
-0 |
|aGeographic LC subject heading |
| |
|vGenre subdivision |
| |
|xTopical subdivision |
| |
|yChronological subdivision |
| |
|zGeographic subdivision |
| 700 |
1- |
|aPersonal name added entry. |
| 710 |
2- |
|aCorporate name added entry. |
| 711 |
2- |
|aConference name added entry. |
| 730 |
0- |
|aUniform title (non-analytical) |
| 02 |
|aUniform title (analytical) |
| 740 |
0- |
|aRelated title. |
| 02 |
|aAnalytical title |
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