TY  - BOOK
AU  - Karplus,Robert, x
AU  - x
TI  - Science teaching and the development of reasoning: x
SN  - x
U1  - 507/S416 
PY  - 1978///
CY  - California
PB  - The Regents of the University of California
KW  - Science - study and teaching
N1  - x
ER  -