028 PUBLISHER NUMBER (R)
Indicators First Type of publisher number 0 Issue number 1 Matrix number 2 Plate number 3 Other music number 4 Videorecording number 5 Other publisher number Second Note/added entry controller 0 No note, no added entry 1 Note, added entry 2 Note, no added entry 3 No note, added entry
Subfield Codes $a Publisher number (NR) $b Source (NR) $6 Linkage (NR) $8 Field link and sequence number (R)