| First Indicator Undefined # - Undefined |
Second Indicator Undefined # - Undefined |
| Subfield Codes |
|
| $v - Form subdivision (R) $x - General subdivision (R) $y - Chronological subdivision (R) |
$z - Geographic subdivision (R) $6 - Linkage (NR) $8 - Field link and sequence number (R) |
Topical, form, or language term used as a heading in a subdivision record.
Guidelines for applying the content designators defined for field 180 and input conventions are given in the X80 General Subdivisions-General Information section.
| 180 | ##$xPeriodicals$vIndexes | ||||||||
| 180 | ##$xAbnormalities | ||||||||
| 180 | ##$xCriticism, interpretation, etc.$xHistory$yMiddle Ages, 600-1500 | ||||||||
| 180 | ##$xRussian$vDictionaries | ||||||||
| 180 | ##$xPolitical aspects | ||||||||
| 180 | ##$xRhetoric$xAbility testing | ||||||||
| 180 | ##$xArabic | ||||||||
| 180 | ##$xCivilization$y16th century | ||||||||
| 180 | ##$xHistory$y18th century$xExhibitions | ||||||||
| 180 | ##$xNuclear reactor safety$y1975-1985$zUnited States | ||||||||
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