650 SUBJECT ADDED ENTRY--TOPICAL TERM (R)
Indicators
First Level of subject
^ No information available
0 No level specified
1 Primary
2 Secondary
Second 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 Repertoire de vedettes-matiere
7 Source specified in subfield $2
Subfield Codes
$a Topical term or geographic name entry element (NR)
$b Topical term following geographic name as entry element (NR)
$c Location of event (NR)
$d Active dates (NR)
$e Relator term (NR)
$v Form subdivision (R)
$x General subdivision (R)
$y Chronological subdivision (R)
$z Geographic subdivision (R)
$2 Source of heading or term (NR)
$3 Materials specified (NR)
$6 Linkage (NR)
$8 Field link and sequence number (R)