Burton, David M. Elementary number theory / David M. Burton. - 2nd ed. - Dubuque, Iowa : Wm. C. Brown, c1989. - xvii, 450 p. : ill ; 24 cm. Includes bibliographies and index. ISBN: 0697059197 LCCN: 88070738 Subjects--Topical Terms: Number theory. LC Class. No.: QA241 / .B83 1989 Dewey Class. No.: 512/.72