Նորմալ դիտում MARC դիտում ISBD Դիտում

Piaget, Jean, 1896-1980.

The child's conception of number / Jean Piaget. - New York : W.W. Norton & Co., 1965. - ix, 248 p. ; 23 cm. - The Norton Library N324 . - 155.4/1323 .

Includes bibliogr. references and index.

Subjects--Topical Terms:
Number concept in children.
Cognition in children

Dewey Class. No.: 155.4/1323