Clark, Grahame, 1907-1995. Prehistoric societies / by Grahame Clark and Stuart Piggott. - New York : Knopf, 1965. - 356 p. : illus., maps. ; 22 cm. - The History of human society . Bibliography: p. [333]-340. Subjects--Topical Terms: Prehistoric peoples. Dewey Class. No.: 913.031