Roberts, A. Wayne Faces of mathematics an introductory course for college students A. Wayne Roberts, Dale E. Varberg. - 2nd ed. - New York Harper & Row c1982. - xiii, 492 p. ill. 25 cm. Includes indexes. ISBN: 0060454717 LCCN: 81023779 //r89 Subjects--Topical Terms: Mathematics LC Class. No.: QA39.2 / .R6 1982 Dewey Class. No.: 510