00911nam a2200241 a 4500 3130987 091008s1972 ohua b 000 0 eng d \\\71173766 0675091640 DLC DLC DLC 371.33 18 Smith, Hayden Richard, 1915- Instructional media in the learning process / by Heyden R. Smith and Thomas S. Nagle. Columbus, Ohio : C. E. Merrill Pub. Co., 1972. vi, 120 p. : illus. ; 23 cm. Includes bibliographies. Teaching Aids and devices. Audio-visual education. Nagle, Thomas S., joint author. 4322 4322 0 0 ddc 0 0 BRACUL BRACUL GEN 2009-10-08 0.00 0 371.33 SMI 3010005088 2009-10-08 1 2009-10-08 BK