TY  - BOOK
AU  - Keeves,John P.
ED  - The International Association for the Evaluation of Educational Achievement
TI  - Learning science in a changing world: cross-national studies of science achivement : 1970 to 1984 
SN  - 9291210013
U1  - 507.1 23
PY  - 1992///.
CY  - The Netherlands: 
PB  - The International Association for the Evaluation of Educational Achievement (IEA), 
ER  -