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APA Citation
Institution,, B. S. (1996). Cinematography. Printed 8 mm Type S image area on 35 mm motion-picture film perforated 8 mm Type S, 2R-4.227 (1664) or 5R-4.234 (1667). Position and dimensions.. London : British Standards Institution. http://access.bl.uk/ark:/81055/vdc_100104529574.0x000001