00756nam a2200229Ia 4500 58927 BIBL 20250228150712.0 700422s1968 caua b 00110 eng 68021788 EVLG 621.38 Eboch, Sidney C. 219360 Local Operating audio-visual equipment Sidney C. Eboch ; Illus. by George W. Cochern. 2d ed. San Francisco Chandler Pub. Co.; distributors: Science Research Associates, Chicago [1968] iv, 76 p. illus. (part col.) Chandler publications in audiovisual communications 71825 Local 921004 Bibliography: p. 63-64. Audiovisual equipment 55950 45057 45057 0 0 0 621_380000000000000_E16O2 0 evl 123743 10 10 1 2016-05-27 84885 0 621.38 E16o2 80000000700453 2016-05-27 00:00:00 r:58927 z:NCC:D 6