TY  - BOOK
AU  - Tickton, Sidney G. (ed.)
TI  - To improve learning: : an evaluation of instructional technology 
SN  - 0835204626
U1  - 370.78 
PY  - 1971///
CY  - New York
PB  - R. R. Bowker
KW  - Learning
KW  - Educational technology
N1  - HB
ER  -