New challenges in the social studies : implications of research for teaching / edited by Byron G. Massialas and Frederick R. Smith. Massialas, Byron G. 1929- Smith, Frederick R. (Frederick Robert), 1929- Social sciences Study and teaching. 372.83 MAN Includes bibliographical references and index. Belmont, Calif. : Wadsworth, c1965. c1965. 1965 Text x, 261 p. : eng