Indicators
First Number source
^ Source specified in subfield $2
0 Superintendent of Documents Classification System
1 Government of Canada Publications: Outline of Classification
^ No edition information recorded [OBSOLETE]
Second Undefined; contains a blank (^)
0 Assigned by NLC [OBSOLETE]
1 Assigned by an agency other than NLC [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 information (R)
$2 Number source (NR)
$6 Linkage (NR)
$8 Filed link and sequence number (R)
$5 Library to which class number applies [OBSOLETE]