X30 Uniform Titles - General Information

Field definition and scope:

Each uniform title field is unique in its definition and scope. For specific information, select from the list below.

630 Subject Added Entry - Uniform Title (R)

830 Series Added Entry - Uniform Title (R)

Note: There is no field 430 which corresponds to fields 130, 630, 730, and 830. See the description of fields 440 Series Statement/Added Entry - Title and 490 Series Statement for series statements consisting only of titles.

Record requirements: The National level record requirement for the uniform title fields is Mandatory if applicable. For the national level requirements by subfield, and the minimal level record and subfield requirements, see the specific field.

Field repeatability: See the specific field for its repeatability.

Guidelines for applying content designators:

The content designators identify the subelements occurring in uniform or conventional title, title page title, or series title headings that are not entered under a name in a name/title heading and that are constructed according to the generally accepted cataloging and thesaurus-building rules [e.g., Anglo-American Cataloguing Rules (AACR 2), Library of Congress Subject Headings (LCSH)].

A uniform title heading is used to bring together bibliographic entries for a work when various issues have appeared under different titles and to provide identification for a work when the title by which it is known differs from the title proper of a particular issue or when different publications have identical titles.

A uniform title entered under a name is contained in field 240 or in subfield $t (Title of a work) in the field appropriate for the author's name (X00 Personal Names, X10 Corporate Names, X11 Meeting Names).

Uniform titles used in phrase subject headings (e.g., Bible in atheism) are contained in field 650 (Subject Added Entry - Topical Term).

There is no field 430 which corresponds to fields 130, 630, 730, and 830. See the description of fields 440 and 490 for series statements consisting only of titles.

The indicators, subfield codes, and input conventions for the uniform title fields 130, 630, 730, and 830 follow similar patterns. Guidelines for applying the first indicator and subfield codes are below. Subfields are grouped by type of entry. See the specific field for the second indicator information.

For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below. An asterisk ( * ) in the column indicates that the requirement varies. See table in the specific field.:

Position	Description	NLR	MLR	Repeatability
Field X30	Uniform Titles	A	*	*
Indicator:
First
130, 630, 730	Nonfiling characters	M
0	No nonfiling characters present	A
1-9	Number of nonfiling characters present	A

830	Undefined; contains a blank	M

Second	Second indicator position	M

Subfield code:
	Title portion
$a	Uniform title	M	*	NR
$d	Date of treaty signing	A	*	R
$e	Relator term [630]	O	O	R
$f	Date of a work	A	*	NR
$g	Miscellaneous information	A	O	R
$h	Medium	O	O	NR
$i	Relationship information [730]	O	O	R
$k	Form subheading	A	*	R
$l	Language of a work	A	*	NR
$m	Medium of performance for music	A	*	R
$n	Number of part/section of a work	A	*	R
$o	Arranged statement for music	A	*	NR
$p	Name of part/section of a work	A	*	R
$r	Key for music	A	*	NR
$s	Version	A	*	R
$t	Title of a work	A	O	NR
$v	Volume/sequential designation [830]	A	O	NR
$x	International Standard Serial Number [730, 830]	O	O	NR
$4	Relationship [630, 730]	O	O	R

	Subject subdivision portion
$v	Form subdivision [630]	A	O	R
$x	General subdivision [630]	A	O	R
$y	Chronological subdivision [630]	A	O	R
$z	Geographic subdivision [630]	A	O	R

	Control subfields
$w	Bibliographic record control number [830]	O	O	R
$0	Authority record control number or standard number	O	O	R
$1	Real World Object URI			R
$2	Source of heading or term	A	O	NR
$3	Materials specified [630, 730, 830]	O	O	NR
$5	Institution to which field applies [730, 830]	A	O	NR
$6	Linkage	A	*	NR
$7	Control subfield [830]			NR
	/0 - Type of record
	/1 - Bibliographic level
$8	Field link and sequence number	O	O	R

Input conventions:

Ambiguous headings (what is considered a "uniform title")

Punctuation

Spacing

Initial articles (includes information on diacritics or special characters)

Content designator history:

First indicator - Nonfiling characters [130, 630, 730]

Values # - Undefined [obsolete, 1979]

# - Nonfiling characters not specified [obsolete, 1980]

The number of character positions associated with a definite or indefinite article at the beginning of a uniform title field that are disregarded in sorting and filing processes was not specified prior to the definition of the first indicator position in 1979.

The interpretation of a # (blank) to indicate that the number of nonfiling characters is not specified was made obsolete in 1980. Pre-1979 records may contain a # (blank) meaning undefined in this position.

Second indicator - Main entry/subject relationship [130] (BK MU SE) [obsolete]: The use of the second indicator in field 130 to indicate the main entry/subject relationship was made obsolete in 1990. The values were: 0 (Main entry/subject relationship irrelevant) and 1 (Main entry is subject).

Second indicator - Type of added entry [730]

Values 0 - Alternative entry (BK AM CF MP MU SE) [obsolete]

1 - Secondary entry (BK AM CF MP MU SE) [obsolete]

1 - Printed on card (VM) [obsolete]

3 - Not printed on card (VM) [obsolete]

In 1993, second indicator values 0 (Alternative entry) and 1 (Secondary entry) were made obsolete in the books, archival and manuscripts control, computer files, maps, music, and serials specifications. Values 1 (Printed on card) and 3 (Not printed on card) were made obsolete in the visual materials specifications.

Subfield $d - Date of treaty signing [new]: The date of signing of a treaty was not separately subfield coded prior to the definition of subfield $d in 1980.

Subfield $e - Relator term [630] [new, 2005]

Subfield $g - Miscellaneous information [changed, 2014]: In 2014, subfield $g was made repeatable.

Subfield $i - Relationship information [730] [new, 2009]

Subfields $n - Number of part/section of a work [new]

$p - Name of part/section of a work [redefined]

In 1979, subfield $n was defined for numbered parts/sections and subfield $p (Part) was redefined to include only named parts/sections. Prior to that change, both the number and the name of a part were contained in one $p subfield.

Subfield $s - Version [changed, 2017]: Subfield $s was made repeatable.

Subfield $w - Bibliographic record control number [830] [new, 2007]

Subfield $x - International Standard Serial Number [830] [new, 2008]

Subfield $0 - Authority record control number [new, 2007]

Subfield $0 - Authority record control number [redefined, 2010]

Subfield $1 - Real World Object URI [new, 2017]

Subfield $2 - Source of heading or term [130, 730, 830] [new, 2019]: Subfield $2 was previously defined in field 630 only.

Subfield $3 - Materials specified [830] [new, 2008]

Subfield $4 - Relator code [630] [new, 2005]

Subfield $4 - Relator code [renamed, 2017] [redescribed, 2017]: Subfield $4 was renamed to Relationship and redescribed to allow for the recording of relationship URIs in addition to MARC and non-MARC codes.

Subfield $4 - Relationship [730] [new, 2018]

Subfield $5 - Institution to which field applies [830] [new, 2010]

Subfield $7 - Control subfield [830] [new, 2013]

For specific field information, select a field:

130 Main Entry - Uniform Title

630 Subject Added Entry - Uniform Title

730 Added Entry - Uniform Title

830 Series Added Entry - Uniform Title