Barnett, Raymond A. Precalculus Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen and Dave Sobecki - 7th ed. - New York: McGraw-Hill, 2011. - xxx, 820p. Eng ISBN: 9780073519517 Subjects--Topical Terms: Precalculus Dewey Class. No.: 512.1 / PRE