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222 U. S. GOVERNMENT FILMS justments at various altitudes. (SN 1059-d; 51 frames, synchronized disc, 27 minutes) 41 America (My Country 'Tis of Thee) U.S. Department of Agriculture, 1947. Illustrations of the song first sung by Boston school children on Independence Day, 1832. For 4-H Club work. (27 frames) 39 American Farm Home Life U.S. Department of Agriculture, 1946. General conception of modern home life on a typical American farm. (62 frames) 39 The American Nautical Almanac for the Year 1943 U.S. Department of the Navy, 1943. (Navigation Series) How to use the al- manac and apply the information obtained to determine the Greenwich hour angle of the planets Jupiter and Vega and the angle of the moon. (SN 83-s; 64 frames, synchronized disc, 15 minutes) 41 Amperes, Volts and Ohms U.S. Department of the Navy, 1944. (Radio Technician Training Series. Ele- mentary Electricity) Reviews material presented in motion picture, same title. (SN 1540-au; 23 frames) 41 Analysis of Maneuvers. Part 1 U.S. Department of the Navy, 1943. (Instrument Flight Control Series) Con- tact and instrument flying; how to main- tain constant heading, deal with changing air density, and account for altitude. (SN 1059-e; 37 frames, synchronized disc, 15 minutes) 41 Analysis of Maneuvers. Part 2 U.S. Department of the Navy, 1943. (Instrument Flight Control Series) Title self-explanatory. (SN 1059-f; [50?] frames, synchronized disc, [20?] minutes) . 41 Analysis of Maneuvers Using Instru- ments U.S. Department of the Navy, 1944. (Instrument Flight Control Series) Title self-explanatory. (SN 1059-tv; 46 frames, synchronized disc, [10?] minutes) 41 The Analytical Balance U.S. Public Health Service, 1951. Title self-explanatory. (CDC-F-12; 67 frames, synchronized disc, [10?] minutes) 27 The Anatomy of the Honeybee U.S. Department of Agriculture, 1939. Structures of parts of worker, queen, and drone in detail. Revision. (33 frames: single; also double) 39 Anchoring and Mooring Seaplanes U.S. Department of the Navy, 1942. How to drop, secure, and weigh anchor; how to moor seaplanes at permanent bases. (SN 929; 64 frames) 41 Approach Control U.S. Civil Aeronautics Administration, 1945. Approach Control: purpose and op- eration; how to land a plane: procedures and phraseology. (54 frames, color, syn- chronized disc, 12 minutes) 7, 41 Approach Procedure U.S. Department of the Navy, 1943. (Instrument Flight Control Series. Air- port and Airway Traffic Control Pro- cedure No. 3) Title self-explanatory. (SN 1059-r; [50?] frames, synchronized disc, [20?] minutes) 41 Articulation of Teeth U.S. Department of the Navy, 1949. (Dental Prosthetic Laboratory Technique Series) Title self-explanatory. (SN 5372- d; 40 frames, color, synchronized disc, 12 minutes) 41 Artificial Respiration U.S. Department of the Navy, 1942. (First Aid Series) How to apply artificial