First indicator - Nonfiling characters

0  No nonfiling characters present

1-9  Number of nonfiling characters present

Second indicator - Thesaurus

0  Library of Congress Subject Headings

1  LC subject headings for children's literature

2  Medical Subject Headings

3  National Agricultural Library subject authority file

4  Source not specified  [Not used]

5  Canadian Subject Headings

6  Répertoire de vedettes-matière

7  Source specified in subfield $2


a  Uniform title (NR)

d  Date of treaty signing (R)

e  Relator term (R)

f   Date of a work (NR)

g  Miscellaneous information (R)

h  Medium (NR)  [Not used]

k  Form subheading (R)

l   Language of a work (NR)

m Medium of performance for music (R)

n  Number of part/section of a work (R)

o  Arranged statement for music (NR)

p  Name of part/section of a work (R)

r   Key for music (NR)

s  Version (NR)

t   Title of a work (NR)  [Pre-AACR2]

v  Form subdivision (R)

x  General subdivision (R)

y  Chronological subdivision (R)

z  Geographic subdivision (R)

0  Authority record control number or standard number (R)

2  Source of heading or term (NR)

3  Materials specified (NR)

4  Relator code (R)

6  Linkage (NR)

8  Field link and sequence number (R)

NOTE:  See MARC 21 Format for Bibliographic Data (630 Subject Added Entry - Uniform Title) for code definitions not given below.


Field 630 contains:

1.   Names of radio programs and motion pictures.

2.   Names of anonymous works.

3.   Some treaties and intergovernmental agreements; concordats.

4.   Composite manuscripts or manuscript works.

5.   Titles of works entered under title such as Atlantic Monthly and Foreign Affairs.

NOTE:  Subject headings that contain uniform titles as part of a phrase are coded as 650.

650 #0 Bible and atheism.


The first indicator specifies the number of nonfiling characters to be ignored for sorting purposes.  Initial articles are omitted according to CONSER policy, therefore, always set the first indicator to "0".

The second indicator describes the source of the heading.  For instructions see Subject Headings - General Information.


For serials, the most commonly used subfields are:  $a, $v, $x.  For a description of subfields $v, $x, $y, and $z, see Subject Headings - General Information.  For a description of all other subfields, see Headings - General Information.

630 00 Sporting news.

630 00 New York herald tribune.

630 00 Skamander (Warsaw, Poland) $v Periodicals.

630 00 New York times (New York, N.Y. : 1857) $v Indexes.

Related fields, etc.

Headings - General Information, 130, Subject Headings - General Information, 730, Appendix I

630 Subject Added Entry - Uniform Title  (MARC 21 Format for Bibliographic Data)

See also:

6XX  Subject Access Fields

Variable Data Fields

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

CONSER Editing Guide:  Contents