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AMERICAN STANDARDS — by numbers, cont'd No. Title Vol., page, issue 222. 47-1946 Negative Aperture Dimensions and Image Size for 16-Mm Duplicate Negatives Made from 35-Mm Positive Prints Z22.48-1946 Printer Aperture Dimensions for Contact Print- ing 16-Mm Positive Prints from 16-Mm Nega- tives Z22.49-1946 Printer Aperture Dimensions for Contact Print- ing 16-Mm Reversal and Color Reversal Duplicate Prints Z22 . 50-1946 Reel Spindles for 16-Mm Motion Picture Projec- tors Z22. 51-1946 Method of Making Intermodulation Tests on Variable-Density 16-Mm Sound Motion Picture Prints Z22. 52-1946 Method of Making Cross-Modulation Tests on Variable-Area 16-Mm Sound Motion Picture Prints Z22.53-1946 Method of Determining Resolving Power of 16-Mm Motion Picture Projector Lenses Z22.54-1946 Method of Determining Freedom from Travel Ghost in 16-Mm Sound Motion Picture Projectors Z22.55-1947 Specification for 35-Mm Sound Motion Picture Release Prints in Standard 2000-Foot Lengths Z22.56-1947 Film Nomenclature (Reference is only descrip- tion of the separately published Standard) Z52 War Standard Z22. 57-1947 Buzz-Track Test Film for 16-Mm Motion Pic- ture Sound Reproducers Z22. 58-1947 Picture Projection Aperture of 35-Mm Sound Motion Picture Projectors Z22.59-1947 Photographing Aperture of 35-Mm Sound Mo- tion Picture Cameras Z22.60-1948 Theater Sound Test Film for 35-Mm Motion Picture Sound Reproducing Systems Proposed Z22.61-1949 Sound Focusing Test Film for 35-Mm Motion Picture Sound Reproducers (Service Type) Proposed Z22.62-1948 Sound Focusing Test Film for 35-Mm Motion Picture Sound Reproducers (Laboratory Type) Proposed 46: 299, Apr. 1946 46: 300, Apr. 1946 46: 301, Apr. 1946 46: 303, Apr. 1946 46: 305, Apr. 1946 46: 307, Apr. 1946 46: 309, Apr. 1946 50: 284, Mar. 1948 50: 275, 1948 44: 285, Apr. 1945 51: 537, Nov. 1948 50: 286, Mar. 1948 50: 287, Mar. 1948 51: 539, Nov. 1948 50: 275, Mar. 1948 54: 107, Jan. 1950 50: 275, Mar. 1948 51: 541, Nov. 1948 50: 275, Mar. 1948 77