MARC21       008g'33  Type of visual material
     Values: 
              a   Art original
              b   Kit
              c   Art reproduction
              d   Diorama
              e   Electronic videorecording [obs.]
              f   Filmstrip
              g   Game
              i   Picture
              k   Graphic
              l   Technical drawing
              m   Motion picture
              n   Chart
              o   Flash card
              p   Microscope slide
              q   Model
              r   Realia
              s   Slide
              t   Transparency
              v   Videorecording
              w   Toy
              z   Other