710 Established Heading Linking Entry

Field definition and scope:

Field 710 contains a corporate name that is equivalent to the name contained in the 110 field of the same record. It links headings within a system or from different thesauri or authority files.

The National level record requirement for this field is Optional.

Field 710 is repeatable.

Guidelines for applying content designators:

The content designators identify the subelements occurring in a name or name/title heading that contains a corporate name 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 corporate name, a form subheading, a title of an item or a series, and/or a city section name entered under the name of a jurisdiction are X10 corporate names.

A name of a jurisdiction that represents an ecclesiastical entity is an X10 corporate name.

For subject purposes, other names of jurisdictions used alone or followed by subject subdivisions are geographic names and are contained in the X51 fields.

For non-subject purposes, other names used alone are contained in the X10 fields.

A named meeting that is entered directly under a corporate name is contained in the X11 fields.

Corporate names used in phrase subject headings (e.g., Catholic Church in art) are contained in the X50 fields.

For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:

Position	Description	NLR	Repeatability
Field 710	Established Heading Linking Entry - Corporate Name	O	R
Indicator:
First	Type of corporate name entry element	M
0	Inverted name	A
1	Jurisdiction name	A
2	Name in direct order	A

Second	Thesaurus	M
0	Library of Congress Subject Headings/Name authority file	A
1	LC subject headings for children's literature	A
2	Medical Subject Headings/NLM name authority file	A
3	National Agricultural Library subject authority file	A
4	Source not specified	A
5	Canadian Subject Headings/LAC name authority file	A
6	Répertoire de vedettes-matière	A
7	Source specified in subfield $2	A

Subfield code:
$a	Corporate name or jurisdiction name as entry element	M	NR
$b	Subordinate unit	A	R
$c	Location of meeting	A	R
$d	Date of meeting or treaty signing	A	R
$e	Relator term	A	R
$f	Date of a work	A	NR
$g	Miscellaneous information	A	R
$h	Medium	A	NR
$i	Relationship information	A	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/meeting	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	NR
$v	Form subdivision	A	R
$w	Control subfield	A	NR
	/0 Link display	M
	/1 Replacement complexity	A
$x	General subdivision	A	R
$y	Chronological subdivision	A	R
$z	Geographic subdivision	A	R
$0	Authority record control number or standard number	A	R
$1	Real World Object URI		R
$2	Source of heading or term	A	NR
$4	Relationship	O	R
$5	Institution to which field applies	A	R
$6	Linkage	A	NR
$8	Field link and sequence number	O	R

See: Examples for this field.

Input conventions:

Ambiguous headings (what is considered a "corporate" name)

Display constant for X10 fields

Display constants for 7XX Linking Entries

Content designator history:

Subfield $c - Location of meeting [changed, 2014]: In 2014, subfield $c was made repeatable.

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

Subfield $i - Relationship information [new, 2014]

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

Subfields $u - Record control number [obsolete, 1997] [USMARC only]

$v - Record control number [redefined, 1995] [USMARC only]

$0 - Record control number [new, 1997]

$0 - Record control number [redefined, 2010]

$v - Form subdivision [redefined, 1995] [USMARC only]

$3 - Authority record control number [obsolete, 1997] [CAN/MARC only]

In USMARC, from 1993 to 1995, subfield $v was defined as Record control number in the 7XX Heading Linking Entry fields. When subfield $v was adapted for form subdivisions in MARC bibliographic and authority heading fields in 1995, subfield $v was redefined as Form subdivision and subfield $u was defined as Record control number. In 1997, subfield $0 was added as Record control number in 5XX and 7XX fields and $u was made obsolete.

Subfield $w/1 - Replacement complexity [new, 2002]: In 2002, subfield $w/1 was defined with the following codes: a (Heading replacement does not require review); b (Heading replacement requires review); and n (Not applicable).

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

Subfield $4 - Relationship code [new, 2014]

Subfield $4 - Relationship 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.

LC Guidelines:

710 Established Heading Linking Entry - Corporate Name

DCM Z1 Instructions:

7XX Heading Linking Entries