Leff, Lawrence S. College algebra / Lawrence S. Leff. - [2nd ed.]. - Hauppauge, N.Y. : Barron's, 2005. - 230 p. : ill. ; 21 cm. - Barron's EZ 101 study keys . ISBN: 9780764129148 0764129147 LCCN: 2005049879 Subjects--Topical Terms: Algebra. LC Class. No.: QA152.3 / .L44 2005