TY  - BOOK
AU  - Pyle,David W.
TI  - Intelligence: an introduction 
SN  - 0710003064
PY  - 1979///
CY  - London
PB  - Routledge & Kegan Paul
KW  - Intellect
KW  - Cognition in children
N1  - Bibliography : p. 109-119
ER  -