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MOTION PICTURES 13 Series) Ingot in blooming and rod mills; making bars, beams, and angles; use of sheet-steel piling in dams; use of steel in stadium, Trylon and Perisphere, Radio City and San Francisco bridge. (15 min- utes, silent) 17 Bars, Punches, and Drifts U.S. Department of the Army, 1943. (Care and Use of Hand Tools Series No. 5) Bars, punches, and drifts; proper uses; common misuses. (TF 9-2030; 14 minutes) 32, 41 The Basic Camera U.S. Department of the Navy, 1948. (Fundamentals of Photography Series) Fundamentals of still- and motion pic- ture photography. (MN 5383; 15 min- utes) 32, 41 Basic Electricity U.S. Department of the Air Force in cooperation with Minneapolis-Honeywell Regulator Co., 1948. Voltage, current, resistance, magnetic fields, induction, primary and secondary coils, series and parallel circuits, and other fundamentals of electricity. Animated cartoon. Con- tinued in "Basic Electronics". ( AF 213-a; 20 minutes, color) 11, 32,41 Basic Electronics U.S. Department of the Air Force in cooperation with Minneapolis-Honeywell Regulator Co., 1948. Atoms and electrons, vacuum tube, cathode, rectifier tube, amplifier tube, grid, and bridge circuits. Animated cartoon. Continuation of "Basic Electricity". (AF 213-b; 17 minutes, color) 11, 32, 41 Basic Hydraulics U.S. Department of the Navy, 1944. Physical laws, mechanical advantages, and applications of basic hydraulics. Three basic units of hydraulic system: pump, pipe, and cylinder. (MN 5027-a; 9 minutes, color) 7, 32, 41 Basic Net Mending U.S. Fish and Wildlife Service, 1948. (Commercial Fisheries Series No. 4) How to mend nets; basic procedures and equipment. For fishermen and handicraft groups. (18 minutes, color) 20, 32, 41 Basic Principles of Frequency Modu- lation U.S. Department of the Army, 1944. Describes what "FM" is in radio com- munication, how it is used, and what its advantages and limitations are. Diagram- med comparison of FM and AM trans- mission. (TF 11-2069; 31 minutes) 32, 41 Basic Principles of the Automatic Pilot U.S. Department of the Air Force, 1942. (The Automatic Pilot Series) How auto- matic actuation of control surfaces through air pick-offs, diaphragms, bal- anced oil valves, servo cylinders and follow-up system maintain altitude and heading. (TF 1-507'; 10 minutes) 7 Basic Sanitation U.S. Public Health Service, 1950. (Com- munity Fly Control Series) Procedures in urban and rural basic sanitation pro- grams for the elimination of all fly breeding sources. (CDC^L-090; 9 min- utes, color) 27, 41 Basic Telephony U.S. Department of the Army, 1949. Basic principles involved in telephones and telephone circuits. (TF 11-1553; 20 minutes) 41 Basic Typing: Machine Operation U.S. Department of the Navy, 1943. Re- views various techniques for gaming speed and accuracy; nomenclature of typewriters; locations and use of various parts. (MN 1512-b; 28 minutes) 32, 41 Basic Typing: Methods U.S. Department of the Navy, 1943. Re- views fundamental techniques of typing,