Elton, G. R. The practice of history [by] G. R. Elton. - New York, Crowell [1968, c1967] - vi, 178 p. 22 cm. Bibliographical footnotes. LCCN: 67029612 Subjects--Topical Terms: History--Methodology. LC Class. No.: D16 / .E4 1968 Dewey Class. No.: 907.2 / ELP