Planning and operating media centers. - Washington Association for Educational Communications and Technology 1975. - 79 p. ill. 28 cm. - Readings from Audiovisual instruction 2 . Includes bibliographical references. LCCN: 76355773 Subjects--Topical Terms: Instructional materials centers LC Class. No.: LB3044 / .P56 Dewey Class. No.: 371.3/078