TY  - BOOK
AU  - International Congress Of Psychology , 1980 (Leipzig)
ED  - International Congress Of Psychology , 1980 (Leipzig)
TI  - Paper :  cognitive and motivational aspects of instruction
U1  - Sp1,N80, M21 
PY  - 1982///
CY  - New York
PB  - North Holland     
KW  - PSYCHOLOGY
ER  -