Doe, Maryann. Business mathematics : a positive approach / Maryann Doe, Michael Warlum. - 2nd ed., instructor's ed. - St. Paul : West Pub. Co., c1988. - xiv, 667, [30] p. : ill. ; 28 cm. Includes index. ISBN: 0314630538 (pbk.) LCCN: 87031956 Subjects--Topical Terms: Business mathematics. LC Class. No.: HF 5691 / D64 1988 Dewey Class. No.: 513/.93