Schlagwort-Normdaten
          
               
               
               
MARC21       685     History Note (R)
  Subfields: 
             $a   New number--single number or beginning number of span (R)
             $b   Previous number--single number or beginning number of span (R)
             $c   Classification number--ending number of span (R)
             $d   Date of implementation of authoritative agency
             $e   Local implementation date
             $f   Title and publication date
             $i   Explanatory text (R)
             $t   Topic (R)
             $y   Table identification--schedule (R)
             $z   Table identification--table number (R)
             $2   Edition number (R)
             $5   Institution to which field applies (R)
             $8   Link and sequence number

 Indic/etc.: 1st: Result of change
             0 Completely new number
             1 Completely vacated number
             2 Partially changed number
             3 Reused after being vacated
             4 Immediately reused
             8 Other
             2nd: Type of history information
             0 Relocation
             1 Formerly
             2 Discontinuation
             3 Expansion
             8 Other