Gurley, John G, Challengers to capitalism : Marx, Lenin, and Mao / John G. Gurley. - San Francisco : San Francisco Book Company, (c)1976. - vii, 175 pages : illustrations ; 23 cm. LCCN: 75029749 Subjects--Topical Terms: Communism.Capitalism. LC Class. No.: HX56 / .C435 1976 HX56