TY  - BOOK
AU  - Wittich,Walter Arno
AU  - Schuller,Charles Francis
TI  - Instructional technology; its nature and use
T2  - Exploration series in education
SN  - 0060471727
AV  - LB1028.3LB1043 .W57 1973.W58
U1  - 371.33 
PY  - 1973///]
CY  - New York
PB  - Harper & Row
KW  - Educational technology
N1  - First-4th ed. published under title: Audiovisual materials; Includes bibliographies
ER  -