1130
Sigel, Irving E.
Logical thinking in children: research basd on Piaget's theory
New York
Holt, Rinehart and Winston
]1968[
xv, 541p.: ill
Includes bibliographies
edited by Irving E. Sigel ]and[ Frank H. Hooper; With foreword by Barbel Inhelder
، Conservation of substance )Psychology(
، Child study
، Piaget, Jean, 6981-
BF
723
.
C68
S5
AU
AU Hooper, Frank H.
AU Piaget, Jean 1896-
TI
CL
