Körperschafts-Normdaten
          
               
               
               
MARC21       451     See From Tracing--Geographic Name (R)
  Subfields: 
             $a   Geographic name
             $b   Name following place as entry element [obs.]
             $i   Reference instruction phrase
             $v   Form subdivision (R)
             $w   Control subfield
                  ** 0 Special relationship
                  .... a Earlier heading
                  .... b Later heading
                  .... d Acronym
                  .... f Musical composition
                  .... g Broader term
                  .... h Narrower term
                  .... i Reference instruction phrase in subfield$i
                  .... n Not applicable
                  ** 1 Tracing use restriction
                  .... a Name reference structure only
                  .... b Subject reference structure only
                  .... c Series reference structure only
                  .... d Name and subject reference structures
                  .... e Name and series reference structures
                  .... f Subject and series reference structures
                  .... g Name, subject, and series reference structures
                  .... n Not applicable
                  ** 2 Earlier form of heading
                  .... a Pre-AACR 2 form of heading (national name authority file)
                  .... e Earlier established form of heading (national authority file)
                  .... o Earlier established form of heading (other authority file)
                  .... n Not applicable
                  ** 3 Reference display
                  .... a Reference not displayed
                  .... b Reference not displayed, field 664 used
                  .... c Reference not displayed, field 663 used
                  .... d Reference not displayed, field 665 used
                  .... n Not applicable
             $x   General subdivision (R)
             $y   Chronological subdivision (R)
             $z   Geographic subdivision (R)
             $5   Institution to which field applies (R)
             $6   Linkage