Use the guidelines set forth below, taken from the BIBCO Core Record Standards, to create core-level records using DCRM(B).

Leader and Directory

Depending on the individual automated system or bibliographic utility, part or all of the leader and directory may be system-supplied.  Generally speaking, the cataloger will have to supply values for the following leader positions:

06  Type of record

07  Bibliographic level

17  Encoding level

18  Descriptive cataloging form

Give the encoding level (Leader/17) a value of 4 to indicate a core-level record.

Control Fields

Control fields:  001, 003, 005

These fields are generally system-supplied.

Control field:  007

Code the following positions of the Microform 007 if appropriate:

00  Category of material

01  Specific material designation

Control field:  008

Code at least the following positions:

06  Type of date/Publication status

07-10  Date 1

11-14  Date 2

15-17  Country of publication, production or execution

22  Target audience

23  Form of item

28  Government publication

33  Literary form

34  Biography

35-37  Language

38  Modified record code

39  Cataloging source

Data Fields

010 field:  Library of Congress control number (LCCN)

Mandatory if applicable.

020 field:  International standard book number (ISBN)

Mandatory if applicable.

040 field:  Cataloging source

Bibliographic records for books that reflect the DCRM(B) core-level standard must contain the designation "dcrmb" in subfield $e of field 040.

042 field:  Authentication code

For DCRM(B) core-level records contributed by members of the PCC BIBCO program, include the designation "pcc" in field 042.  For other DCRM(B) core records, leave the field blank.

050, 082, 086, 090, etc., fields:  Call numbers

Assignment of at least one classification number from an established classification system recognized in MARC 21 Format for Bibliographic Data is encouraged, but not mandatory.

Since institutional practices for rare books often involve locally formulated call numbers, a requirement for a national standard classification could cause additional or undue effort for creators of DCRM(B) core-level records.  However, if an institution supplies standard call numbers to materials covered by the DCRM(B) core record standard, it is encouraged to add these numbers in the appropriate call number field.

1XX fields:  Main entry

Mandatory if applicable.  Headings on all DCRM(B) core-level records contributed to BIBCO must also be supported by national-level authority records.  Authority records are not required for headings on other DCRM(B) core-level records.

240 field:  Uniform title

Mandatory if applicable.  Supply a uniform title if it is known or can be readily inferred from the publication.

245 - 4XX fields

Mandatory if applicable.  One of the basic differences between AACR2 and DCRM(B) is the method and extent to which bibliographic details (fields 245-4XX) are recorded.  As to method, bibliographic details should be recorded as correctly as possible, according to the descriptive conventions expected for the field.  As to extent, DCRM(B) provides some options for abridging descriptive fields, and creators of core-level records for rare books are encouraged to implement these options wherever appropriate.

245 field:  Title statement

Subfield $a is mandatory; all other subfields are mandatory if applicable.  Subfield $h is mandatory for microforms.

246 field:  Varying form of title

Mandatory if applicable.  Use judgment in assessing each item or collection and assign a complement of title variants that covers variations deemed important.  The variants assigned are intended to reflect cataloger judgment and/or local institutional policy.

250 field:  Edition statement

Mandatory if applicable.

260 field:  Publication, distribution, etc. (Imprint)

Subfield $c is mandatory.  Supply the data appropriate to subfields $a and $b if readily available; otherwise, use "[S.l.]" and "[s.n.]" as appropriate.  All other subfields are mandatory if applicable.

300 field:  Physical description

Subfield $a and subfield $c are mandatory.  All other subfields are mandatory if applicable.

4XX fields:  Series statements

Mandatory if applicable.  Transcribe all series as found in the publication in either a 490 or a 440 field.  For DCRM(B) core-level records being contributed to BIBCO, all traced series must be supported by a national-level authority record.  Untraced series need not be supported by a national-level authority record.  If a national-level series authority record already exists for the series, follow the first tracing practice indicated on the record and record the series and tracing appropriately (i.e., in a 490 field, a 440 field or a 490/8XX pairing).

5XX fields:  Notes

In DCRM(B) core-level records, a note indicating the transposition of any title area elements in the transcription is mandatory if applicable.  Other notes are not required in DCRM(B) core, except as indicated below, although they may be included, if considered important.  Notes are not required to justify added entries.

500 field:  General note

Source of title proper (if other than chief source)

Mandatory if applicable.

501 field:  With note

Mandatory if applicable.

502 field:  Dissertation note

Mandatory if applicable.

505 field:  Formatted contents note

Mandatory if applicable.  Supply as appropriate for collections, compilations, or for multipart monographs with separate titles.

510 field:  Citation/references note

Addition of citation notes as a means of abbreviating detailed description of the publication is encouraged.  Prefer sources that provide the fullest or most authoritative information, to keep the number of citations to a minimum.

6XX fields:  Subject access

Mandatory if applicable.  Use judgment in assessing the publication and, if appropriate, assign a complement of headings that provides access to the primary/essential subject of the work (as opposed to secondary or tertiary aspects) at the appropriate level of specificity.  Assign such headings from an established thesaurus or subject heading system recognized by the MARC 21 Format for Bibliographic Data.  In focusing on the primary subject, follow the conventions of the particular subject heading system being used, including the use of paired or related headings where necessary to represent the subject fully.

655 field:  Genre/form headings

Addition of genre/form terms to the DCRM(B) core-level record is encouraged if local policy calls for use of such terms, as appropriate to the piece.  Prefer the terminology used in controlled vocabularies issued by the RBMS Bibliographic Standards Committee.  Terms from other authorized vocabularies (e.g., the Art & Architecture Thesaurus Online) may also be used as appropriate.

700-75X fields:  Added entries

Mandatory if applicable.  Use judgment in assessing each item and assign a complement of added entries that covers the primary relationships associated with the manifestation of which the item is a part.  The inclusion and importance of added entries are intended to reflect individual cataloger’s judgment and/or local institutional policy.

Headings on all DCRM(B) core-level records contributed to BIBCO must be supported by national-level authority records.  Authority records are not required for headings on other DCRM(B) core-level records.

800-840 fields:  Series added entries

Mandatory if applicable.

See also:

Appendix C:  Core-Level Records