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

This is an ARCHIVED VERSION of the 2002 electronic edition of the MARC 21 Concise Formats. Please see www.loc.gov/marc/concise/ for the most up-to-date version of the electronic MARC 21 Concise Formats.

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 2001 edition of the MARC 21 Concise Formats was published and are included in the 2002 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.

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]

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700 - ESTABLISHED HEADING LINKING ENTRY--PERSONAL NAME (R)

A personal name heading that is equivalent to the heading contained in the 1XX field or the same record. It links headings within a system or from different thesauri or authority files. See field 100 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


700
05$wa$aAugustin$csaint, évêque d'Hippone.$0(CaOONL)0053A1978F#

700
11$wa$aDostoyevsky, Fyodor,$d1821-1881.$tCrime and punishment
[LC name/title (as subject) heading for children's literature]

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710 - ESTABLISHED HEADING LINKING ENTRY--CORPORATE NAME (R)

A corporate name heading 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. See field 110 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


710
25$wa$aNational Gallery of Canada$0(CaOONL)0000J0193E#

710
27$wa$aRoyal Society of Medicine$2[source code]

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711 - ESTABLISHED HEADING LINKING ENTRY--MEETING NAME (R)

A meeting name that is equivalent to the name contained in the 111 field or the same record. It links headings within a system or from different thesauri or authority files. See field 111 for descriptions of most content designators.

Indicators

Subfield Codes

Example


711
25$wa$aConférence canadienne des sciences de I'information$n(10e : $d1982 : $cOttawa, Ont.)$0(CaOONL)0014G4758F#

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730 - ESTABLISHED HEADING LINKING ENTRY--UNIFORM TITLE (R)

A uniform title heading that is equivalent to the heading contained in the 130 field of the same record. It links headings within a system or from different thesauri or authority files. See field 130 for descriptions of most content designators.

Indicators

Subfield Codes

Example


730
#5$wa$aBible.$pA.T.$0(CaOONL)0004E5217F#

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748 - ESTABLISHED HEADING LINKING ENTRY--CHRONOLOGICAL TERM (R)

A chronological term that is equivalent to the heading contained in the 148 field of the same record. It links headings within a system or from different thesauri or authority files. See field 148 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


748
#7$a1710-1714$wna$2fast

748
#7$a1800-1899$wnb$2fast

748
#7$a1862$wnb$2fast

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750 - ESTABLISHED HEADING LINKING ENTRY--TOPICAL TERM (R)

A topical term heading that is equivalent to the heading contained in the 150 topical term or 180 general subdivision heading field of the same record. It links headings within a system or from different thesauri or authority files. See field 150 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


750
#0$81$wb$aMedical referral

750
#0$81$wb$aMedical consultation

750
#2$81$wb$aOrthopedics

750
#2$81$wb$aRadiography

750
#0$aCancer$xNursing

750
#2$aNeoplasms$xNursing

750
#2$aOncologic Nursing

750
#7$aMilitary training$2lctgm

750
#0$aDrill and minor tactics

750
#0$aUniforms$0[record control number]

750
#0$aSummer resorts$0(DLC)sh#85130430#$wna

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751 - ESTABLISHED HEADING LINKING ENTRY--GEOGRAPHIC NAME (R)

A geographic name heading that is equivalent to the heading contained in the 151 geographic name or 181 geographic subdivision field of the same record. It links headings within a system or from different thesauri or authority files. See field 151 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


751
#2$aNew York City

751
#0$aNew York (N.Y.)

751
#0$aCharlevoix (Mich.) $0(DLC)n##82062705# $wnb

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755 - ESTABLISHED HEADING LINKING ENTRY--GENRE/FORM TERM (R)

A genre/form term heading that is equivalent to the 155 genre/form term or 185 form subdivision heading field of the same record. It links headings within a system or from different thesauri or authority files. See field 155 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


755
#6$aPériodiques$vIndex

755
#0$aPeriodicals$vIndexes

755
#7$aatlases$0[record control number]$2aat

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780 - SUBDIVISION LINKING ENTRY--GENERAL SUBDIVISION (R)

A general subdivision term that is equivalent to the 150 topical term or 180 general subdivision field of the same record. It links headings within a system or from different thesauri or authority files. See field 180 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


780
#0$wc$xCorrosion

780
#0$xUniforms$0[record control number]

780
#0$wa$xHistory

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781 - SUBDIVISION LINKING ENTRY--GEOGRAPHIC SUBDIVISION (R)

A geographic subdivision name that is equivalent to the 151 geographic name or 181 geographic subdivision field of the same record. It links headings within a system or from different thesauri or authority files. See field 181 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


781
#0$zUkraine, Southern

781
#0$zNew York (State)$zRome

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782 - SUBDIVISION LINKING ENTRY--CHRONOLOGICAL SUBDIVISION (R)

A chronological subdivision heading that is equivalent to the 150 topical term or 182 chronological subdivision field of the same record. It links headings within a system or from different thesauri or authority files. See field 182 for descriptions of most content designators.

Indicators

Subfield Codes

Example


782
#0$wa$y20th century

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785 - SUBDIVISION LINKING ENTRY--FORM SUBDIVISION (R)

A form subdivision term that is equivalent to the 155 genre/form term or 185 form subdivision field of the same record. It links headings within a system or from different thesauri or authority files. See field 185 for descriptions of most content designators.

Indicators

Subfield Codes

Examples


785
#7$vatlases$0[record control number]$2aat

785
#0$wa$vPeriodicals

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788 - COMPLEX LINKING ENTRY DATA (NR)

The explanatory text and the headings referred to when the linking relationship between headings from different subject heading systems or thesauri cannot be adequately conveyed by fields 700-785. No subelements of the heading referred to are separately subfield coded. Adjacent headings referred to may be contained in a single subfield $a. The heading referred to may be an established heading or a subject subdivision that is not equivalent to but is related to the heading in the 1XX field.

Indicators

Subfield Codes

Examples


788
#0$isubdivision$aForeign bodies$iunder names of organs, e.g.$aEye--Foreign bodies

788
#7$iterms$aChinese$iand$aFurniture$iare separate facets.$2aat

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