Snyder, Llewellyn R. Essential business mathematics / Llewellyn R. Snyder and W. F. Jackson. - 5th ed. - New York : McGraw-Hill, 1967. - xi, 552 p. : ill. Withdrawn (25/10/12) due to removal of pages 245-306. LCCN: 93034155 Subjects--Topical Terms: Business mathematics