Dunfee, Maxime Social studies through problem solving : a challenge to elementary school teachers / Maxine Dunfee, Helen Sagl. - New York: Holt, Rinehart and Winston, 1966. - 386 p. : ill. ; 23 cm. Includes bibliography p. 371-373 and index. Subjects--Topical Terms: Social sciences--Study and teaching (Elementary) Dewey Class. No.: 372.83