Leithold, Louis Before calculus : functions, graphs and analytic geometry / Louis Leithold. - 3rd ed. - New York, N. Y. : Harper Collins College Pub., c1994. - xv, 794p. : ill. ; 24 cm. Includes index. ISBN: 0673469115 Subjects--Topical Terms: Mathematics LC Class. No.: QA39.2 / L44 1993