Motion pictures and filmstrips, January-June 1972 - Library of Congress. Copyright Office

AN INTRODUCTION TO GENETICS.

POPULATIONS. Centron Educational Films. 17 min., sd., color, 16 mm. © Centron Corp., Inc.; 20Jan72; MP22307.

PORTABLE FIRE EXTINGUISHERS. Teaching Films. 10 min., sd., color, 16 mm. (Industrial fire protection and control) © Teaching Films, Inc., division of A-V Corp.; 10Apr72; MU8438.

PORTLAND, OREGON. See

FRIENDS. Episode no. 49.

THE PORTSMOUTH CONFERENCE. Thorne Films. 4 min., si., b&w, Super 8 mm. (The 8 mm. documents project, no. 332) Loop film.

Credits: Producers, Dale C. Willard, James C. Schott & Dennis S. Grogan.

NM: compilation authorship.

POSITIONING. See