PROMOTING COOPERATION. See

SUPERVISOR TRAINING IN HUMAN RELATIONS.

PROTECTING THE PATIENT. See

POST-SURGICAL CARE.

PROTEIN. See

[QUALITY BAKERS OF AMERICA COOPERATIVE TELEVISION COMMERCIALS]

PTYALIN. Thorne Films, 4 min., si., color, Super 8 mm. (Enzyme action) Loop film. © Thorne Films, Inc.; 1Dec70; MP21404.

PUERTO RICO AND THE PUERTO RICANS (Filmstrip) Urban Media Materials. 2 filmstrips, color, 35 mm. With Content guide for teachers, 22 l.

Contents: Pt. 1-2: The Puerto Ricans. 54 fr.--Puerto Rico. 59 fr.

Credits: Writer & photographer, Edward Dubrowsky.