MARC 21 Concise Authority: Heading Linking Entry Fields (7XX)

Fields 700-788 contain information that provides a machine link within a system between equivalent headings whether they are structured in the same or different form, are from the same or different authority files or printed thesauri, or whether they exist as separate authority records.

Information for Translators and Other Users
Items highlighted in red indicate changes made after the 2003 edition of the MARC 21 Concise Formats was published and are included in the 2004 printed edition of the MARC 21 Concise Formats.


HEADING LINKING ENTRIES--GENERAL INFORMATION

The inclusion of a linking entry field in an established heading or established heading and subdivision record for a name, name/title, uniform title, topical term, form term, or extended subject heading or in an established heading record for an authorized subject subdivision may be used to related such headings as

The 7XX field tag identifies whether the heading linking entry field contains an established heading (fields 700-755) or an authorized subdivision heading (fields 780-785). The second indicator or the subfield $2 identify the authority system to which the heading in field 7XX belongs. Subfield $0 (Record control number) contains the system control number of the related record when a separate MARC authority record exists for the 7XX heading.

A relationship that cannot be adequately expressed by the 700-785 linking entry fields is described textually in field 788.

A name portion containing open-ended date ends with a space when it is followed by other data in the same subfield; it does not end with a space when it is followed by another subfield.

Guidelines for the second indicator, subfield $2 (Source of heading or term), and subfield $w (Control subfield) in the 7XX fields are provided in this section. Guidelines for applying the other content designators defined for fields 700-785 are provided in each field's corresponding section.

Indicators

Special Subfield Codes

Subfields defined for the 7XX fields are generally the same as those for the corresponding 1XX fields, where some descriptions can be found. Descriptions of both subfield $w and subfield $2 defined for the 7XX fields are given in this section.

Examples


785

#7$vatlases$0[record control number]$2att

750

#0$81$wb$aMedical referral

700

11$wa$aDostoyevsky, Fyodor,$d1821-1881.$tCrime and punishment

710

27$wa$aLast Poets$2[source code]

Go to top of document