Piaget for teachers /
Furth, Hans G., 1920-1999
Piaget for teachers / Hans G. Furth. - Englewood Cliffs [E.U.A.] : Prentice-Hall, 1970. - 163 p. : il.
Piaget, Jean, 1896-1980 --Crítica e interpretación
Piaget for teachers / Hans G. Furth. - Englewood Cliffs [E.U.A.] : Prentice-Hall, 1970. - 163 p. : il.
Piaget, Jean, 1896-1980 --Crítica e interpretación