USMARC 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.

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

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 subfield $w, subfield $0, subfield $2, and subfield $8 as defined for the 7XX fields are given in this section.

Examples


700
05$wa $aFrancis, of Assisi, $cSaint, $d1182-1226 [NLC English heading]

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

700
06$wa $aFrancois, d'Assise, $csaint, $d1182-1226 [NLC French heading]

750
#2$81 $wb $aOrthopedics

750
#2$81 $wb $aRadiography

700
11$wa $aDostoyevsky, Fyodor, $d1821-1881. $tCrime and punishment

781
#0$zFrance $zCorsica

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


Contains 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


700
05$wa $aFrancis, of Assisi, $cSaint, $d1182-1226

700
06$wa $aFrancois, d'Assise, $csaint, $d1182-1226

700
07$wa $aFrancis, of Assisi, $cSaint, $d1182-1226 $2[source code]

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

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


Contains a corporate 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


710
27$wa $aLast Poets $2[source code]

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

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


Contains a meeting 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes


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


Contains a uniform title 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators


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


Contains a topical term 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


750
#2$aGenetic Engineering

750
#5$aHydroponics

750
#7$aconservation $0[record control number] $2aat

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
#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]

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


Contains a geographic 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


751
#2$aNew York City

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

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


Contains a genre/form term 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


755
#6$aPeriodiques $vIndexes

755
#0$aPeriodicals $vIndexes

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

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


Contains a general subdivision 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

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 HEADING LINKING ENTRY--GEOGRAPHIC SUBDIVISION (R)


Contains a geographic subdivision 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


781
#0$zFrance $zCorsica

781
#0$zNew York (State) $zRome

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


Contains a chronological subdivision 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Example


782
#0$wa $y20th century

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


Contains a form subdivision 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
Content designators defined for this field are generally the same as those for the corresponding 1XX field, where some descriptions can be found. Descriptions of the second indicator and subfields $w, $0, $2, and $8 are given in the Heading Linking Entries--General Information section.

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)


Contains 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.
Descriptions of the second indicator and subfield $2 are given in the Heading Linking Entries--General Information section.

Indicators

Subfield Codes

Examples


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

788
#7$i[text to be supplied] $2aat

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