Downing, Douglas. Algebra, the easy way / [electronic resource] At head of title: Barron's / Douglas Downing.. — 2nd ed.. — Hauppauge, N.Y. : : Barron's,, c1989.. — xiv, 318 p. : : ill. ; 28 cm. Includes index. ISBN: 0812041941 (pbk.) LCCN: 89006455 Subjects--Topical Terms: Algebra. LC Class. No.: QA152.2 / .D69 1989 Dewey Class. No.: 512