PROPERTIES OF CARDIAC MUSCLE. Pt. 2, Isolation of the cardiac pacemaker. Iowa State University. 4 min., si., color, 16 mm. (Physiology film series) © Iowa State University a.a.d.o. Iowa State University of Science & Technology; 15Oct69; MP21018.
PROPERTIES OF CARDIAC MUSCLE. Pt. 3, Cardiac muscle contrasted with skeletal muscle. Iowa State University. 4 min., si., color, 16 mm. (Physiology film series) © Iowa State University a.a.d.o. Iowa State University of Science & Technology; 15Oct69; MP21019.
PROPERTIES OF CARDIAC MUSCLE. Pt. 4, Cardiac response to an artificial pacemaker. Iowa State University. 4 min., si., color, 16 mm. (Physiology film series) © Iowa State University a.a.d.o. Iowa State University of Science & Technology; 15Oct69; MP21020.
PROPERTIES OF CARDIAC MUSCLE. Pt. 5, Sino-atrial block in the frog heart. Iowa State University. 3 min., si., color, 16 mm. (Physiology film series) © Iowa State University a.a.d.o. Iowa State University of Science & Technology; 15Oct69; MP21021.
PROTECTIVE COLORATION--ANIMALS. Troll Associates. 4 min., si., color, Super 8 mm. Loop film. © Troll Associates; 16Jan70; MP20720.
PROTECTIVE COLORATION--BIRDS. Troll Associates. 4 min., si., color, Super 8 mm. Loop film. © Troll Associates; 16Jan70; MP20719.
PROTECTORS. See
THE BOLD ONES.
PROTEINS AND DEAMINATION (Filmstrip) Ward's Natural Science Establishment. 82 fr., color, 35 mm. With kit. Author: Robert L. Gering; developed by Information Applications. © Ward's Natural Science Establishment, Inc.; 1May70; A198785.
PROTESTIN' PILOT. Terrytoons. 5 min., sd., b&w, 16 mm. (Deputy Dawg) © Terrytoons, a division of CBS Films, Inc.; 19Aug64 (in notice: 1963); LP38378.