TY  - BOOK
AU  - Gagne, Robert M.
TI  - Conditions of learning: and theory of instruction: Theory of instruction
SN  - 0030636884
U1  - 370.1523 GAGR 
PY  - 1985///
CY  - New York
PB  - Holt, Rinehart and winston Inc
KW  - General Management
ER  -