654 SUBJECT ADDED ENTRY--FACETED TOPICAL TERMS (R)
Indicators
First Level of subject
^ No information provided
0 No level specified
1 Primary
2 Secondary
Second Undefined; contains a blank (^)
Subfield Codes
$a Focus term (NR)
$b Non-focus term (R)
$c Facet/hierarchy designation (R)
$e Relator term (R)
$v Form subdivision (R)
$y Chronological subdivision (R)
$z Geographic subdivision (R)
$2 Source of heading or term (NR)
$3 Material specified (NR)
$4 Relator code (R)
$6 Linkage (NR)
$8 Field link and sequence number (R)