Riddle, Douglas F. Analytic geometry / Douglas F. Riddle. - 6th ed. - PAsig City Cengage Learning Asia, c2009. - xvii, 473 p. : ill. ; 24 cm. Includes index. ISBN: 978-981-2657-67-1 Subjects--Topical Terms: Geometry, Analytic. LC Class. No.: QA 551 / R52 2009 F CTE