Kamii, Constance. Physical knowledge in preschool education implications of piaget's theory/ by Constance Kamii and Rheta De Vries. - Englewood Cliffs, N.J.: Prentice-Hall, 1978. - xiii, 321 p. : ill. ; 24 cm. Includes index. Bibliography: p. 312-315. ISBN: 0136698042 Subjects--Personal Names: Piaget, Jean, 1896. Subjects--Topical Terms: Education, Preschool.