Sigel, Irving E.
Logical thinking in children : research based on Piaget's theory / Irving E. Sigel - New York : Holt Rinehart and winston press, 1968. - 541 p.
Includes Index
Child psychology
Conservation of substance (Psychology)
155.413 S574L 1968
Logical thinking in children : research based on Piaget's theory / Irving E. Sigel - New York : Holt Rinehart and winston press, 1968. - 541 p.
Includes Index
Child psychology
Conservation of substance (Psychology)
155.413 S574L 1968