Das, B. C. Differential calculus/ B. C. Das and B. N. Mukherjee. - Calcutta: U. N. Dhur & Sons Pvt. Ltd., 1998. - xxii, 499 p. ; ill. ; 18 cm. ix, 164 p. ; ill. ; 28 cm. ISBN: 8185624850 Subjects--Topical Terms: Mathematics--Calculus Dewey Class. No.: 515.33 / DAS