Pflichtablieferungs-Nummer
        engl.: Copyright or Legal Deposit Number
               
               
               
Pica+        007K$0  
Pica3        2250    

MAB          576     


MARC21       017     Copyright Registration Number (R)
  Subfields: 
             $a   Copyright registration number (R)
             $b   Source (agency assigning number)
             $6   Linkage


UNIMARC      021     
  Subfields: 
             $a   Country code (ISO 3166)
             $b   Legal deposit number
             $z   Erroneous number