Isaacs, Susan Sutherland Fairhurst, 1885-1948 Intellectual growth in young children / Susan S. Isaacs ; with an appendix on children's "why" questions by Nathan Isaacs. - London : G. Routledge, 1930, repr. 1960. - xi, 370 p. ; 23 cm. Includes index. Subjects--Topical Terms: Child study.Educational psychology. Dewey Class. No.: 155.413