First indicator - Coverage/location in source

0  Coverage unknown

1  Coverage complete

2  Coverage is selective

3  Location in source not given

4  Location in source given

Second indicator:

#  Undefined


a  Name of source (NR)

b  Coverage of source (NR)

c  Location within source (NR)

u  Uniform Resource Identifier (R)

x  International Standard Serial Number (NR)

3  Materials specified (NR)  [Not applicable]

6  Linkage (NR)

8  Field link and sequence number (R)

NOTE:  See MARC 21 Format for Bibliographic Data (510 Citation/References Note) for code definitions not given below.


From January 1984 through May 1985, the CONSER Abstracting and Indexing (A&I) Coverage Project added 130,000 citation notes to the database.  The symbol "AIP" in field 040 identifies records updated by the Project.  A&I services supplied lists of titles covered and dates of coverage.  Maintenance of A&I information was handled by NSDP and LAC.  For further information, see A6.2.

In November 2002, the Policy Committee of the Program for Cooperative Cataloging voted to remove most of the abstracting and indexing coverage fields (field 510) from CONSER records.  This decision was based on a recognition that the data has served its purpose well, is now readily available online from other sources, and can never be actively maintained in CONSER records.

OCLC began the systematic removal of 510 fields from CONSER records at the end of February 2003.  By spring 2003, most of the abstracting and indexing coverage fields were removed from CONSER records.

NOTE:  510 fields with second indicator 3 or 4, which are primarily used for citations for data given in rare serial records were not removed.  510 fields for Chemical Abstracts continue to be actively maintained.

Field 510 specifies where a serial has been indexed and/or abstracted and, if known, the dates of coverage or location within the source.  Each abstracting/indexing service is tagged as a separate field.  For rare serials, field 510 contains a bibliographic reference note.

This field is used when the indexing is external to the publication in hand.  Field 555 is used when the index is an integral part of the publication and covers more than one volume or issue.

The indexing and abstracting services referenced are primarily those issued as serials.  Certain monographic titles, particularly those that are standard reference tools in a subject area or that cover periods of time not included in continuing publications, may also be given in this field.

Display constants

Display constants may be generated on output through a user's print program by first indicator values as listed below::

0  Indexed by:

1  Indexed in its entirety by:

2  Indexed selectively by:

3  References:

4  References:

Editing instructions

1.   No changes should be made to existing field 510 information.

2.   510 fields should be grouped alphabetically within indicator values.  The order of the indicators is:  1, 2, 0.  This arrangement identifies comprehensive A&I products, followed by products with more selective coverage, and finally those with unidentified coverage.

510 1# Business periodicals index $x 0007-6961

510 1# Nexis $b Jan. 13, 1975-

510 2# Chemical abstracts $x 0009-2258

510 2# Popular magazine review $x 0740-3763

510 0# Biography index $x 0006-3053

510 0# Industrial arts index

3.   For removal of 510 fields when a CONSER record exceeds the maximum allowable length, see C14.

First indicator - Coverage/location in source

0    Coverage unknown.

This value indicates that coverage is unspecified.  Participants adding 510 fields to a record must always use value "0" because information for values "1" and "2" can only be supplied by the service.

1    Coverage complete.

Abstracting and indexing coverage, including references to all articles in a journal and/or all issues within each volume, is considered to be complete.

2    Coverage is selective.

Selective coverage means that the A&I service does not include references to all articles in a journal.

3 and 4  Location in source not given/given.

These indicator values are used when cataloging a rare serial and the serial has been cited in a bibliography.  The indicator values are used in conjunction with subfield $c.


Subfields are input in the following order:  $a, $x, $b, $c, $6.

$a  Name of source.

The title of a serial or a service (e.g., Index Medicus) but not the name of a company (e.g., National Library of Medicine) should be input in subfield $a.  If no title is known, the field should not be used.

The key title and ISSN of the abstracting and indexing service is used when the A&I product is a printed publication.  If the publication has no key title, the cataloging entry is used.

If there is no print publication, the commonly used form of name for the online database is used.  In cases where both a print publication and an online database exist, the print form of the publication is preferred.

$x  International Standard Serial Number.

Input the ISSN, when available, from the serial record for the indexing or abstracting service.

$b  Coverage of source.

The dates of the serial with which the service began and ended coverage are included in subfield $b.  Subfield $b is used only by NSDP, LAC, and those services supplying information directly online, such as NLM, because the dates of coverage are supplied by the services.  Participants adding 510 fields to a record should not use subfield $b.

$c  Location within source.

Subfield $c is used when cataloging a rare serial and the serial has been cited in a bibliography.  Subfield $c contains the page numbers or other form of reference.  When appropriate, give in the form cited in Standard Citation Forms for Published Bibliographies and Catalogs Used in Rare Book Cataloging by Peter VanWingen and Stephen Paul Davis, (Washington : Library of Congress, 1982; available from the LC Cataloging Distribution Service).

510 4# Case, A.E. Poetical miscellanies $c 440, 1b, 2b, 3b, 4-6

510 4# Sabin $c 62661

510 4# Crane & Kaye $c 693

510 4# Drake, M. Almanacs $c 10195 et al.

$6  Linkage.

For instructions on the use of subfield $6, see field 880.

Additional instructions

1.   When the title of the indexing or abstracting service changes, add a new 510 field to the record.

2.   When coverage of the serial changes, thus requiring a different value in the first indicator, add a new 510 field with appropriate dates to the record.

Related fields, etc.

A6.2, C14, 555, Appendix L

510 Citation/References Note  (MARC 21 Format for Bibliographic Data)

See also:

5XX  Note Fields

Variable Data Fields

Section E.  MARC 21 Format for Serials as Applied Within CONSER

CONSER Editing Guide:  Contents