OPERATION: STREET ENCOUNTER. National Education Institute. Made by Nelson Co. 15 min., sd., color, 16 mm. (Under arrest) © Nelson Co.; 13Sep72; LP41338.
OPERATOR. See
WHERE DOES IT HURT.
OPTIMIZING INSTRUMENT CONDITIONS. See
BASIC ATOMIC ABSORPTION.
OR ELSE. See
THE COURTSHIP OF EDDIE’S FATHER.
ORDER: FIRST ALWAYS COMES BEFORE LAST. See
DEVELOPING ELEMENTARY CONCEPTS.
ORGANIZATION (Filmstrip) Teaching Resources. 61 fr., color, 35 mm. (Approaches to learning) With Guide, 16 p. © Teaching Resources Corp.; 10Jul72; A378943.