MARC21 007h'04 Dimensions Values: Microfilm a 8 mm. a 8 mm. d 16 mm. f 35 mm. g 70 mm. h 105 mm. Microfiche and Microopaque l 3x5 in. or 8x13 cm. m 4x6 in. or 11x15 cm. o 6x9 in. or 16x23 cm. Aperture cards p 3 1/4 x 7 3/8 in. or 9x19 cm. u Unknown z Other