A survey of modern algebra / Garrett Birkhoff and Saunders MacLane. Birkhoff, Garrett, 1911-1996. Mac Lane, Saunders, 1909-2005, joint author. Algebra. QA251 .B5 1953 512 19 BIS New York : Macmillan, 1953. 1953. 1953 Text xi, 472 p. eng