CODE MEANING
01 > -
02 > d DELETE CODE
03 > n SUPPRESSION
04 > w WITHDRAWN
05 > r RESERVE BRIEF
06 > a ACQ BRIEF
07 > v CCSU VFILE
08 > b CSL BABY BIB
09 > g GPO SHELF
10 > f FULL TEXT
11 > x BERNAN XPOSED
12 > z AG MONTHLY
13 > m AG MISSING BIB
14 > y AG CORRECT