Gustafson, R. David College algebra and trigonometry / R. David Gustafson, Peter D. Frisk. - 2nd ed. - Pacific Grove, California : Brooks/Cole Publishing, 1986. - xiv, 673 p. : ill. ; 25 cm. - (Gustafson and Frisk series) . Includes index. ISBN: 0534064809 Subjects--Topical Terms: Algebra.Trigonometry. LC Class. No.: QA154.2 / .G87 1986