OUR CHILDREN'S HERITAGE.
SIMILARITY. Macmillan Co. Made by Davidson Films. 1 reel, si., color, Super 8 mm. (Macmillan school mathematics program) Loop film. © Macmillan Co.; 31Dec69; MP21023.
SIMONE MARTINI (Filmstrip) Herbert E. Budek. 15 fr., color, 35 mm. © Herbert E. Budek; 1Dec65; JP12704.
SIMPLE MACHINES. See
MACMILLAN ELEMENTARY SCIENCE FILMSTRIPS.
SIMPLE TECHNIQUES IN SHAPING GLASS. Centron Educational Films. 9 min., sd., color, 16 mm. © Centron Corp., Inc.; 1May70; MP20635.
SINGER EDUCATION & TRAINING PRODUCTS. See
THIS IS THE SOVIET UNION.
SINO-ATRIAL BLOCK IN THE FROG HEART. See
PROPERTIES OF CARDIAC MUSCLE.