Logical thinking in children; research based on Piaget's theory /
Sigel, Irving E
Logical thinking in children; research based on Piaget's theory / edited by Irving E. Sigel [and] Frank H. Hooper. With foreword by Bärbel Inhelder - New York : Holt, Rinehart and Winston, 1968. - xv, 541 p. illus.
Includes bibliographies.
Conservation of substance (Psychology)
Child psychology.
155.4 / SIG
Logical thinking in children; research based on Piaget's theory / edited by Irving E. Sigel [and] Frank H. Hooper. With foreword by Bärbel Inhelder - New York : Holt, Rinehart and Winston, 1968. - xv, 541 p. illus.
Includes bibliographies.
Conservation of substance (Psychology)
Child psychology.
155.4 / SIG