Dubey, Manoj. Questin Bank in Mahematics for Class xi . / byManoj Dubey. - 6th ed. - New Delhi: Tata McGraw-Hill Publishing Company Limited., 2007. - xi, 426 p. : illis. ; 24 cm. - Questin Bank Series. . ISBN: 0070655537 LCCN: 94047048 Subjects--Topical Terms: Mathematics. Dewey Class. No.: 510 / DUB