00797cam a2200253 a 4500 1704 UR 20220428184821.0 780810s1979 nyua 001 0 eng d 78012812 0060471697 (janium) 1693 (janium)1693 LB1043 .W57 1973 Wittich, Walter A. (Walter Arno), 1910- Instructional technology, its nature and use / Walter A. Wittich, Charles F. Schuller. 6th ed. New York Harper & Row c1979. xx, 331 p ill 24 cm. Includes bibliographies and index. Audio-visual education. Schuller, Charles F. (Charles Francis) VAUGHAN STACKS LB1043 .W58 1979 BK 1 0 0 0 0 AG URBC URBC REST1 2022-04-28 Compra 0 LB1043 W57 1973 0023932 2022-04-28 00:00:00 2022-04-28 LIBRO COMUNICA 44685 44685