McCoy, Neal Henry, 1905- The theory of rings / [by] Neal H. McCoy. - New York : Macmillan, [1964]. - x, 161 p. ; 24 cm. - Macmillan mathematics paperbacks. . Includes bibliographical references ( p. 153-155.) Subjects--Topical Terms: Rings (Algebra). Dewey Class. No.: 512.815