Tags 010-050

Numbers assigned before January 1, 2001 have the following structure in subfields ‡a, ‡b, and ‡z:

Byte                                           Definition

00-02                                        Alphabetic prefix (left-justified, blank fill)

03-04                                        Year of cataloging

05-10                                         Serial number (right-justified, zero fill)

11                                                Blank

12-n                                            Suffix

Examples:

Display                                                 Output

66-11                                           660000011

a66-111                                      a66000111

sa66-11//r69                             sa66000011//r69

Numbers assigned after January 1, 2001 have the following structure in subfields ‡a, ‡b, and ‡z:

Byte                                           Definition

00-01                                         Alphabetic prefix (left-justified, blank fill)

02-05                                         Year of cataloging

06-11                                          Serial number (right-justified, zero fill)

Examples:

Display                                                 Output

2001-1234                                2001001234

a2001-1234                              a2001001234

sn2001-1234                            sn2001001234

• Hyphens are not carried in the OCLC-MARC record

011

obsolete

Linking Library of Congress Control Number (NR)

 Note: Field obsolete

• Field 011 was valid for BKS, CNR, MIX, MAP, SCO, and REC formats

Terminal Display (NR)

(formerly, CONSER Fixed Length Field (NR))

• OCLC defined

Source (NR)

• See LC's MARC Code List for Organizations

OCLC Control Number Cross-Reference (NR)

• OCLC defined

OCLC control number of deleted or merged records (R)

• OCLC control number(s) of duplicate record(s) deleted from WorldCat and replaced by the present record
• Compare the 001 and 019 control numbers of incoming records with the 001 control numbers of previously processed records
• A later transaction on the same record may contain additional holdings, corrected or added bibliographic data, or an instruction to cancel holdings
• Field 019 may contain multiple numbers of variable length without leading zeros
• Each number in field 019 is in a separate subfield ‡a

Binding information (R)

 Note: Subfield obsolete

• Subfield ‡b was valid for BKS, MAP, and SCO formats only

Linkage (NR)

 Note: Subfield obsolete

Other System Control Number (R)

• OCLC defined

System Control Number (R)

In addition to OCLC numbers input by users, after November 12, 2006, all bibliographic records output from OCLC systems include the OCLC number from field 001 in field 035.

Canceled/invalid system control number (R)

Subfield ‡z includes the OCLC number from field 019 for cross-reference records which have been deleted and merged with the present record. Subfield ‡z is repeatable and is not present in every record.

Core Record Designator (NR)

 Note: Field obsolete

• Field 039 was valid for online input only
• It was not output as 039
• Field 039 was output as value 4 (Core-level) in Leader/17 (Encoding Level (ELvl))

Language Code (R)

• See LC's MARC Code List for Languages

No information provided. Formerly, Undefined.

 Note: Value obsolete

Language code of summary or abstract (R)

Formerly, Language code of summary or abstract/overprinted title or subtitle (R)

Authentication code (R)

• See Bibliographic Formats and Standards

Geographic Area Codes (R)

• See LC's MARC Code List for Geographic Areas

Geographic area code (R)

• Each geographic area code is 7 lowercase alphabetic characters
• Left-justified with leading hyphens
• The code provides a hierarchical breakdown of geographic and/or political entities, to the extent possible.

Subfield ‡a contains 7 character positions that pertain to the geographic and/or political entities:

/1 Continent or comparable geographic entity such as ocean

/2 International region

/3-4 National states and internationally recognized dependencies

/5 Regions within a country

/6-7 States or provinces

Source of local code (R)

• See LC's MARC Code List for Relators, Sources, Description Conventions

Source of local subentity code (R)

• See LC's MARC Code List for Relators, Sources, Description Conventions

Form of musical composition code (R)

• See field 008, bytes 18-19 (Form of Composition (Comp)) for code list

Local Holdings (NR)

• OCLC defined
• See History of field 049 for a history of this field, especially when processing tapes produced over a multi-year period

Holding library (R)

• Default Holding library is system-supplied

Inclusive dates of publication or coverage (R)

• Holding library codes may appear in either upper or lowercase or mixed
• Multiple codes may appear in a single subfield ‡a or in separate subfields ‡a
• For local database creation tapes and out-of-warranty tapes—transactions before July 1, 1975 (3-character holding codes separated by commas) are not converted to 4-character holding codes
• Usually textual data entered to the left of the code prints above the call number and data to the right of the code prints below the call number
• A separate set of brackets encloses each separate line of text
  Examples:
  049 [Spec. Coll.] XXXX
  049 [Rare][Books] XXXM
  049 XXM[c.1]‡a XXR[c.2]
  049 [Also Main] XXXB[c.4]
• Any stamp that has been programmed to print automatically on cards does not appear in the 049 field on the tapes

Supplementary class number (R)

 Note: Subfield obsolete

Custodial location (R)

 Note: Subfield obsolete