POTTERY MAKING. Thorne Films. 3 min., si., color, Super 8 mm. (North American Indian series, no. 287) Loop film. © Thorne Films, Inc.; 1Dec72; MP23472.

PRACTICAL FILM MAKING. Encyclopaedia Britannica Educational Corp. Made by Julian Films. 19 min., sd., color, 16 mm. © Encyclopaedia Britannica Educational Corp.; 4Aug72; MP23735.

PRAISE THE FUEHRER AND PASS THE AMMUNITION. See

HOGAN'S HEROES.

PRECISION WEIGHING: THE SUBSTITUTION BALANCE. Harper & Row, Publishers. 1 reel, si., color, Super 8 mm. (Fundamental techniques of chemistry) Loop film. Appl. author: Rod O'Connor. © Harper & Row, Publishers, Inc.; 1Aug68; MP23642.

PREDATORS. See

GUNSMOKE.

PREGNANCY TESTS. Harper & Row, Publishers. Made by Bay State Film Productions. 4 min., si., color, Super 8 mm. Loop film. Appl. author: Robert M. Dixon. © Harper & Row, Publishers, Inc.; 1May71; MP23868.

PREOPERATIVE SURGICAL SCRUB. Case Western Reserve University. Made by Edward Feil Productions. Distributed by Year Book Medical Publishers. 6 min., sd., color, 16 mm. Appl. ti.: Preoperative surgical scrub procedure. © Case Western Reserve University; 15Jul69; MP23915.

PREPARATION AND PROPERTIES OF PROTEINOIDS. Harper & Row, Publishers. 1 reel, si., color, Super 8 mm. (The Origin of life, pt. 2) Loop film. Appl. author: Sidney W. Fox. © Harper & Row, Publishers, Inc.; 1May72; MP23382.