TY  - BOOK
AU  - Singer, Dorothy G.
AU  - Revenson, Tracey A.
TI  -  A Piaget primer: how a child thinks 
SN  - 0452251893 :
U1  - 155.4/13 
PY  - 1978///
CY  - New York
PB  - New American Library
KW  -  Piaget, Jean,
KW  - Cognition in children
KW  - Child psychology
N1  - Includes bibliographical references and index
ER  -