TY  - BOOK
AU  - Wittich,Walter A.
AU  - SCHULLER,Charles F.
TI  - Instructional technology: its nature and use
SN  - 0060471697
PY  - 1979///
CY  - New York
PB  - Harper and Row
KW  - teaching aids
KW  - Educational technology
KW  - sears
N1  - Includes index
ER  -