A first undergraduate course in abstract algebra / Abraham P. Hillman, Gerald L. Alexanderson. Hillman, Abraham P. Alexanderson, Gerald L., joint author. Algebra, Abstract. QA162 .H54 1978 512.02 19 H654f Includes index. Bibliography: p. 393-399. Belmont, Calif. : Wadsworth Pub. Co., c1978. c1978. 1978 Text xv, 428 p. : eng