| First Indicator | Second Indicator |
|---|---|
| Undefined # - Undefined |
Thesaurus 0 - Library of Congress Subject Headings 1 - LC subject headings for children's literature 2 - Medical Subject Headings 3 - National Agricultural Library subject authority file 4 - Source not specified 5 - Canadian Subject Headings 6 - Répertoire de vedettes-matière 7 - Source specified in subfield $2 |
| Subfield Codes | |
|---|---|
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Chronological term that is equivalent to the 148 chronological term or 182 chronological subdivision heading field of the same record. It links headings within a system or from different thesauri or authority files.
Most of the content designators defined for field 748 are the same as those defined for field 148 (Heading-Chronological Term), field 448 (See From Tracing-Chronological Term), and field 548 (See Also From Tracing-Chronological Term). Description, guidelines, and input conventions for shared content designators are given in the X48 Chronological Terms-General Information section.
Guidelines for applying the second indicator, subfield $w (Control subfield), subfield $2 (Source of heading or term), subfield $i (Relationship information), and subfield $4 (Relationship) in field 748 are given in the 7XX Heading Linking Entries-General Information section.
| 150 | ##$aWar of the Mascates, Brazil, 1710-1714 | ||||||||
| 748 | #7$a1710-1714$wna$2fast | ||||||||
| 750 | #0$aWar of the Mascates, Brazil, 1710-1714$0(DLC)sh#96009215# | ||||||||
| 750 | #7$aWar of the Mascates$2fast$wna | ||||||||
| 751 | #7$aBrazil$2fast$wna | ||||||||
| 150 | ##$aFurniture$zUnited States$xHistory$y19th century | ||||||||
| 748 | #7$a1800-1899$wnb$2fast | ||||||||
| 750 | ##$aFurniture$xHistory$wnb$2fast | ||||||||
| 751 | ##$aUnited States$wnb$2fast | ||||||||
| 150 | ##$aBull Run, 2nd Battle of, Va., 1862 | ||||||||
| 748 | #7$a1862$wnb$2fast | ||||||||
| 750 | ##$aBull Run, 2nd Battle$wnb$2fast | ||||||||
| 751 | ##$aVirginia$zBull Run$wnb$2fast | ||||||||