TY  - BOOK
AU  - Sears, Pauline S. [ed.]
TI  - Intellectual development
T2  - Readings in educational research / edited by Merlin C. Wittrack
SN  - 0471769754
U1  - 153 
PY  - 1971///
CY  - New York
PB  - Wiley
KW  - Intellect
KW  - Children
ER  -