Filmmaterial Mikroform
        engl.: Base of film
               
               
MAB          057'10  Trägermaterial Mikroform
        Werte: 
              a   Sicherheitsmaterial: Polyester, Polyethylenerephthalat
              b   Sicherheitsmaterial: Acetat
              c   Kein Sicherheitsmaterial (z.B: Cellulosenitrat)
              u   Unbekanntes Trägermaterial
              v   Verschiedene Trägermaterialien
              x   (Nicht anwendbar)



MARC21       007h'12  Base of film
     Values: 
              #   Not a safety base [obs.]
                  Safety base
              a   Safety base, undetermined
              c   Safety base, acetate undetermined
              d   Safety base, diacetate
              p   Safety base, polyester
              r   Safety base, mixed
              t   Safety base, triacetate Nitrate
              i   Nitrate base
              m   Mixed base (nitrate and safety)
              n   Not applicable
              u   Unknown
              z   Other

 Indic/etc.: Werte wie bei UNIMARC
             
UNIMARC      130$a'10  
     Values: 
              a   Safety base
              b   Not a safety base (e.g., nitrate)
              u   Unknown film base
              x   (not applicable)