MARC21       308     Physical Description for Films (archival) (vm) [obs.]
  Subfields: 
             $a   Number of reels [obs.]
             $b   Footage [obs.]
             $c   Sound characteristics [obs.]
             $d   Color characteristics [obs.]
             $e   Width [obs.]
             $f   Presentation format [obs.]
             $6   Linkage [obs.]