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FILMSTRIPS 285 terial presented in motion picture, same title. (OE 373; 41 frames) 41 Rough Grinding by Pin-Bar: Spheri- cal Surfaces U.S. Office of Education with the coop- eration of the U.S. Department of the Navy, 1944. Reviews material presented in motion picture, same title. (OE 181; 45 frames) 41 Rough Grinding: Spherical Surfaces U.S. Office of Education with the coop- eration of the U.S. Department of the Navy, 1944. (Optical Craftsmanship Ser- ies) Reviews material presented in mo- don picture, same title. (OE 180; 56 frames) 41 Rude Star Identifier U.S. Department of the Navy, 1943. (Navigation Series) How to use star identification table; template discs; es- tablish local meridian; find altitude and azimuth of Jupiter. (SN 83-t; 57 frames, synchronized disc, 12 minutes) 41 Rules of the Road U.S. Coast Guard, 1943. Review of in- land and international rules, privileged and burdened vessels, whistle signals, night signals differentiated by vari-col- ored lights in specific position. (69 frames, color) 41 Rural Colonial and Early American Homes and Gardens U.S. Department of Agriculture, 1936. Exteriors and interiors of homes of in- terest because of their historic and archi- tectural values. (63 frames) ... 39 Safe Food for Good Health U.S. Public Health Service, 1945. (Our Health in Your Hands Series) Explains why and how to buy, store, prepare, and serve food to protect it from contamina- tion. For food handlers and sanitarians and general public. (81 frames, synchro- nized disc, 15 minutes) 26, 41 Safe Handling of Compressed Gases U.S. Department of the Navy, 1946. (Navy Industrial Gases Series) "Don'ts" in transporting, stowing, and handling gases; importance of temperature, mois- ture control; protection of valves; dispo- sition of empty cylinders; segregation of various kinds of gases. (SN 6121-b; 114 frames, color, synchronized disc t [20?] minutes) 41 Safe Practices in Handling DDT U.S. Public Health Service, 1945. (Ma- laria Control Series) How to take proper precautions in mixing and handling DDT, especially in the home. (CDC-5- 005; 37 frames, synchronized disc, 5 min- utes) 27 Safe Practices in the Hoisting of Ma- terial U.S. Department of the Air Force [1943?]. Construction and types of wire rope cable; how to "seize" it; how to use slings; right and wrong ways of clip- ping wire cable; capacities of different wire ropes; hand signals in hoisting; use and care of manila ropes, and proce- dures to follow for safe hoisting. (FS 1-545; 82 frames) 7 Safety Practices for the Motor Vehi- cle Driver (Non-Military Driving) U.S. Department of the Air Force [1943?]. Variety of questions and typi- cal situations to test the motor vehicle operator's knowledge of safe driving practices. (FS 1-888; 108 frames) 7 Sampling and Testing Drinking Water U.S. Public Health Service, 1950. Title self-explanatory. (CDC-5-140; 74 frames, color, synchronized disc, 8 min- utes) . 27