TY - BOOK AU - Maier,Henry William TI - Three theories of child development: the contributions of Erik H. Erikson, Jean Piaget, and Robert R. Sears, and their applications PY - 1969/// CY - New York PB - Harper & Row KW - Erikson, Erik H. KW - Piaget, Jean, 1896 KW - Sears, Robert R. KW - Child psychology N1 - Includes bibliographies ER -