MARC 21 Concise Bibliographic: Linking Entry Fields (76X-78X)


Fields 760-787 contain information that identifies other bibliographic items. Each of the linking entry fields specifies a different relationship between the target item described by the record and a related item. These relationships fall into three categories: 1) related items that assist the user in continuing to search but are not physically required to obtain the target item (e.g., former entries for serials, translations of the target item); 2) related items that have to be obtained physically in order to use the target item (e.g., the host item for a component part: a journal issue containing a specific article); 3) related items that are constituent units of a larger whole (e.g., the individual photographs contained in a visual material collection). The linking entry fields are designed to generate a note in the record in they appear. They can also provide machine linkage between the bibliographic record for the target item and the bibliographic record for the related item, if the related item is covered by a separate record.
Definitions of terms used in the Linking Entry fields:
Target item
a bibliographic item that is the principal or primary unit for the description of which the record was constructed. The target item is the item to which the data in Leader/06 (Type of record) and /07 (Bibliographic level) apply.
Related item
a bibliographic item that has either a chronological, horizontal, or vertical relationship with a target item, and for which the linking entry field is formulated.
Component part
a bibliographic item that is physically part of another bibliographic item such that the retrieval of the part is dependent on the physical identification and location of the host item (e.g., a chapter in a book, an article in a journal).
Constituent unit
a bibliographic item that is part of another item. The constituent unit is physically separate from the item of which it is consider a part.
Host item
a bibliographic item that physically contains the component part described by the target item record (e.g., the book containing the described chapter, the journal in which the article appears).
Chronological relationship
the relationship in time between bibliographic items (e.g., the relation of a serial to its predecessors and successors).
Horizontal relationship
the relationship between versions of a bibliographic item in different languages, format, media, etc.
Vertical relationship
the hierarchical relationship of the whole to its parts and the parts to the whole (e.g., a journal article to the journal, subseries to main entry series).

RECORD LINKS AND NOTES


The record-linking technique in MARC is described below.
Linking Entry Fields (fields 760-787)
These fields carry descriptive data concerning the related item, the control number for the record of the related item, or both. Minimal content designation is provided for the data concerning the related item that is used in the linking entry fields. For data operations requiring fuller content designation, such as indexing and sorting, subfield $w (the record control number for the related item) allows the system to follow that link to the related record to obtain fully content-designated data. Moreover, the coded data in control subfield $7 allows some types of indexing without reference to the actual related record. The value used in the first indicator position of a linking entry field determines whether a note is to be generated from the field.
Linking Entry Complexity Note (field 580)
The Linking Entry Fields are designed to support generation of a note concerning the related item in a display of the record for the target item. When the relationship is too complex to be expressed using a display constant and the data from the linking entry field or the linked record, the note is recorded in the Linking Entry Complexity Note field. When used, this field appears in addition to any relevant 760-787 linking entry field, and no note is generated from the linking entry field.
Linked-Record Requirement (Leader/19)
This data element indicates whether sufficient information is present in the linking entry field to support generation of an eye-readable note that identifies the related item or whether only a related record number is recorded. If only a record number appears, the system will need to obtain the appropriate information from the related record to construct a standard display.
The following subfields or subfield combinations are considered sufficient for display purposes:
  • Subfield $a + $t (Main entry heading + Title)
  • Subfield $a + $s (Main entry heading + Uniform title)
  • Subfield $a (Main entry heading
  • Subfield $t (Title)
  • Subfield $s (Uniform title)
  • Subfield $u (Standard Technical Report Number)
  • Subfield $r (Report number)
Added Entries (fields 700-730)
When an added entry is needed for a title used in a linking field, the added entry is recorded in the appropriate 700-730 field. Linking fields are not intended take the place of added entries. Likewise, an added entry in field 700-730 does not take the place of a linking field, as it cannot cause a note to be generated or carry a record link.
Component Parts
The linking entry field 773 (Host Item Entry) is used to link a target item that is an integral part of another item to the record for the other item. For example, in records for journal articles it contains the identification of the journal. In subfield $g of field 773, the exact location of the article in the journal is recorded.

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760 - MAIN SERIES ENTRY (R)


Information concerning the related main series when the target item is a subseries (vertical relationship). When a note is generated from this field, the introductory phrase Main series: or Subseries of: may be generated based on the field tag.

Indicators

Subfield Codes

Example


760
0#$7c1as $aUnited States. Geological Survey. $tWater supply papers

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762 - SUBSERIES ENTRY (R)


Information concerning a related subseries when the target item is a main series or a parent subseries (vertical relationship). When a note is generated from this field, the introductory phrase Has subseries: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


762
0#$tQuality of surface waters of the United States

762
0#$tEvaporation control research

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765 - ORIGINAL LANGUAGE ENTRY (R)


Information concerning the publication in its original language when the target item is a translation (horizontal relationship). When a note is generated from this field, the introductory phrase Translation of: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


765
0#$tAstrofizicheskie issledovaniíà $w(DLC)###78648457 $w(OCoLC)4798581

765
1#$tMashinovedenie $w(DLC)###90646274 $w(OCoLC)6258868

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767 - TRANSLATION ENTRY (R)


Information concerning the publication in some other language other than the original when the target item is in the original language or is another translation (horizontal relationship). When a note is generated from this field, the introductory phrase Translated as: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


767
0#$aAstrofizicheskie issledovaniíà. English. $tBulletin of the Special Astrophysical Observatory North Caucasus $x0190-2709 $w(DLC)86649325 $w(OCoLC)4698159

767
1#$tFinance & development. Arabic. Tamwil wa-al-tanmiyah $x0250-7455

767
1#$tFinance & development. French. Finances et développement $x0430-473X

767
1#$tFinance & development. German. Finanzierung & Entwicklung $x0250-7439

767
1#$tFinance & development. Spanish. Finanzas y desarrollo $x0250-7447

767
1#$tFinance & development. Portuguese. Financas & desenvolvimento $x0250-7404

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770 - SUPPLEMENT/SPECIAL ISSUE ENTRY (R)


Information concerning the supplement or special issue associated with the target item but cataloged and/or input as a separate record (vertical relationship). When a note is generated from this field, the introductory phrase Has supplement: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


770
0#$tDirectory: United States, territories, and Canada $w(DLC)###78646712 $w(OCoLC)4579783

770
0#$tJournal of cellular biochemistry. Supplement $x0733-1959

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772 - PARENT RECORD ENTRY (R)


Information concerning the related parent record when the target item is a single issue, supplement or special issue (vertical relationship) of the parent item. When a note is generated from this field, the introductory phrase Supplement to: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


772
0#$aWorld agricultural situation (Washington, D.C. : 1970) $x0084-1358 $w(DLC)sf#81008035

772
1#$tStatistiques pour l'économie normande $g1979- $w(OCoLC)6260766

772
1#$tAval $g[1982- ]

772
1#$7unas $aPost boy (London, England) $w(OCoLC)1234567

772
1#$7plas $aSilence, Timothy. $tFoundling hospital for wit. $w(DLC)###85014367

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773 - HOST ITEM ENTRY (R)


Information concerning the host item for the component part/subunit (Leader/07, Bibliographic level, code a, b, or d) that is described in the record (vertical relationship). When a note is generated from this field, the introductory term In may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


773
0#$tHorizon $gVol. 17, no. 98 (Feb. 1948), p. 78-159

773
0#$gVol. 2, no. 2 (Feb. 1976), p. 195-230 $w(DLC)###75001234#

773
0#$tNetworks for networkers : critical issues in cooperative library development $w(DLC)###79024054# $w(Uk)8040016

773
0#$7p1am $aDesio, Ardito, 1897- $tGeographical features of the Karakorum. $dMilano : ISMEO, 1991

773
0#$7p1am $aHamilton, Milton W. (Milton Wheaton), 1901- $tSir William Johnson and the Indians of New York. $d[Albany] : University of the State of New York, State Education Dept., Office of State History, 1967 $w(DLC)###68066801#

773
0#$tGilbert H. Grosvenor Collection of Photographs of the Alexander Graham Bell family

773
0#$tEntomologists' monthly magazine $pENTOMOL MON MAG $dWallingford : Gem Publishing Company $x0013-8908 $yFNMMA

773
0#$7c2bc $aMassachusetts. Commission on Consumer Affairs $tRecords $w(MaRG)170

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774 - CONSTITUENT UNIT ENTRY (R)


Information concerning a constituent unit associated with a larger bibliographic unit. When a note is generated from this field, the introductory term Constituent unit: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


774
00$81\c $oNYDA.1993.010.00130. $n[DIAPimage] $tMap of area with highlighted street

774
00$82\c $oNYDA.1993.010.00131. $n[DIAPimage] $tView of Mill Brook Houses from one of the houses $d89/05

774
00$83\c $oNYDA.1993.010.00132. $n[DIAPimage] $tView SE from Mill Brook Houses on rooftop on Cypress Ave. Between 136th St. and 137th St., $d93/05

774
00$84\c $oNYDA.1993.010.00133. $n[DIAPimage] $tView N from 136th St. roof top area between Bruckner Expressway and Cypress Ave., $d93/06

774
00$85\c $oNYDA.1993.010.00134. $n[DIAPimage] $tView E from rooftop of garden bounded by Bruckner Expressway, 136th St. and 135th St. $d93/06

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775 - OTHER EDITION ENTRY (R)


The entry for another available edition of the target item (horizontal relationship). When a note is generated from this field, the introductory phrase Other editions available: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


775
1#$tCuba economic news $x0590-2932 $eeng $w(OCoLC)2259984

775
1#$tModern maturity $x0026-8046 $w(DLC)###63047860 $w(OCoLC)1758471

775
1#$tCommunist $filu

775
1#$tModern maturity $bNRTA edition

775
1#$aHospital practice (Office ed.) $x8750-2836

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776 - ADDITIONAL PHYSICAL FORM ENTRY (R)


Information concerning another available physical form of the target item (horizontal relationship). When a note is generated from this field, the introductory phrase Available in other form: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


776
1#$tCollege English $x0010-0994 $w(DLC)sc#84007753 $w(OCoLC)3546316

776
1#$tCollege English $x0010-0994 $w(DLC)###41006180 $w(OCoLC)1564053

776
1#$tAmericas $x0003-1615 $w(OCoLC)8370205

776
1#$cOriginal $w(DLC)###24020326

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777 - ISSUED WITH ENTRY (R)


Information concerning the publication that is separately cataloged but that is issued with or included in the target item (horizontal relationship). When a note is generated from this field, the introductory phrase Issued with: may be generated based on the field tag.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


777
1#$tMythprint $x0146- 9347

777
1#$tCurrent drug handbook $g1962- $x0070-1939 $w(DLC)###58006390 $w(OCoLC)1565622

777
1#$tDrug, the nurse, the patient $w(DLC)###66015620 $w(OCoLC)3995456

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780 - PRECEDING ENTRY (R)


Information concerning the immediate predecessor of the target item (chronological relationship). When a note is generated from this field, the introductory term or phrase may be generated based on the value in the second indicator position.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


780
00$aAmerican Hospital Association. $tBulletin of the American Hospital Association $w(OCoLC)1777831

780
01$tAnnales scientifiques de l'Université de Besançon $w(OCoLC)6179013

780
03$tElevage

780
14$tAnnales de géophysique $x0003-4029 $w(OCoLC)1481255 $w(DLC)###52016346

780
14$tAnnali de geofisica $w(OCoLC)1847060 $w(DLC)gs#49000041

780
05$aAmerican Society of International Law. $tProceedings $g1971

780
06$tGraphic notices and supplemental data $w(OCoLC)4276671

780
07$aBritish Columbia. Ministry of Provincial Secretary and Government Services. $tAnnual report $x0226-0883 $w(OCoLC)6270433 $w(DLC)###80649039

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785 - SUCCEEDING ENTRY (R)


Information concerning the immediate successor to the target item (chronological relationship). When a note is generated from this field, the introductory phrase may be generated based on the value in the second indicator position.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


785
00$tTEIC quarterly seismological bulletin $x0741-1898 $w(OCoLC)8978559 $w(DLC)sc#83007721

785
10$tLearning in New York (University of the State of New York) $g1983 $w(OCoLC)10120612

785
01$aSoutheastern College Art Conference. $tSECAC newsletter $w(OCoL- C)4973820

785
02$tBritish Columbia medical journal. $x0007-0556

785
04$tBusiness week $gOct. 1940 $x0007-7135 $w(DLC)###31006225 $w(OCoLC)1537921

785
05$tSheet metal worker $x0096-9249 $w(OCoLC)2054610

785
16$aHospital practice (Hospital ed.) $x8755-4542 $w(DLC)sn#84001694

785
16$aHospital practice (Office ed.) $x8750-2836 $w(OCoLC)10716242

785
17$tServices correctionnels au Canada. $x0711-6810

785
17$tAdult correctional services in Canada. $x0715-2973

785
08$aLos Angeles (Calif.). Dept. of City Planning. $tAnnual report of the Department of City Planning (1966) $w(DLC)sn#86032686

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786 - DATA SOURCE ENTRY (R)


Information pertaining to a data source to which the described item is related. It may contain information about other files, printed sources, or collection procedures.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


786
0#$aUnited States. Defense Mapping Agency. $tReno, NV-CA west digital terrain elevation data $vData for reformatting to DEM format

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787 - NONSPECIFIC RELATIONSHIP ENTRY (R)


Information concerning the work related to the target item when the relationship does not fit any of those defined in fields 760-785.

Indicators

Subfield Codes


See the descriptions of the subfields under field 760.

Examples


787
1#$aEmpire State report (1982) $x0747-0711 $w(DLC)###84647292 $w(OCoLC)8541622

787
1#$tEmpire State report weekly $x0745-8622 $w(DLC)###84647299 $w(OCoLC)9403759

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