Datt, Dev Raj. A text book of social studies. - [2d ed.] - Allahabad, Kitab Mahal, 1967. - 335 p. illus., maps. 22 cm. LCCN: sa 68001123 Subjects--Topical Terms: Civilization--History. Subjects--Geographic Terms: India--Civilization. LC Class. No.: DS423 / .D189 1967 Dewey Class. No.: 901.9