Welton, David A. Children and their world strategies for teaching social studies David A. Welton, John T. Mallan. - 3d ed. - Boston Houghton Mifflin c1988. - xv, 529 p. ill. 25 cm. Includes bibliographies and indexes. ISBN: 0395307694 LCCN: 79007429 Subjects--Topical Terms: Social sciences--Study and teaching (Elementary). LC Class. No.: LB1584 / .W42 1981 Dewey Class. No.: 372.8/3/044