Joshi, D. D. Mathematics : A Textbook for Class XII, Part III / D D Joshi, U B Tewari. - Rev ed. - New Delhi : National Council of Educational Research and training, c1994. - 730 p. : ill. ; 21 cm. Subjects--Topical Terms: Mathematics for school students - Higher Secondary. LC Class. No.: QA37.2 / .J673 1994