Indicators
First Type of edition
0 Full
1 Abridged
^ No edition information recorded [OBSOLETE]
2 Abridged NST version [OBSOLETE]
Second Source of classification number
0 Assigned by LC
4 Assigned by agency other than LC
^ Undefined [OBSOLETE]
Subfield Codes
$a Classification number element--single number or
beginning number of span (NR)
$b Classification number element--ending number of
span (NR)
$c Explanatory term (NR)
$z Table identification--table number (NR)
$2 Edition number (NR)
$5 Institution to which field applies (R)
$6 Linkage (NR)
$8 Field link and sequence number (R)