TY  - BOOK
AU  - Keats,J.A.
AU  - Collis,Kevin F.
AU  - Halford,Graeme S.
TI  - Cognitive development: research based on a neo-Piagetian approach 
SN  - 0471995053
AV  - BF723.C5 C634
U1  - 155.4/13 KEA 
PY  - 1978///
CY  - Chichester, New York
PB  - Wiley
KW  - Cognition in children
N1  - Includes indexes; Bibliography: p. [429]-446
ER  -