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Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 1, January 1949)
Wide-Track Optics for Variable-Area Recorders
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- History of Sound Motion Pictures[Active]
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- (1) Academy Research Council Specification RC-5001 is now incorporated in American Standards Z22.69–1948 and Z22.70–1948 (Universal Decimal Classification UDC 778.534.4), J. Soc. Mot. Pict. Eng. , vol. 51 , pp. 547 – 548 ; November, 1948.EXTERNAL