Three theories of child development: the contributions of Erik H. Erikson, Jean Piaget, and Robert R. Sears, and their applications [by] Henry W. Maier. Maier, Henry W. (Henry William) Erikson, Erik H. (Erik Homburger), 1902-1994. Piaget, Jean, 1896-1980. Sears, Robert R. (Robert Richardson) Child psychology. BF721 .M196 155.4 Includes bibliographies. New York, Harper & Row [1965] [1965] 1965 Text xvi, 314 p. eng