García González, Enrique Piaget / Enrique García González - México : Trillas, 1989 - 106 p. - Biblioteca Grandes Educadores ; 5 . Subjects--Personal Names: PIAGET, JEAN, 1896-1980--VIDA Y OBRA Subjects--Topical Terms: EDUCADORES Dewey Class. No.: 370.092 B582b No.5