@book{22498,
	author = {Das, B.C. and Mukherjee, B. N.},
	title = {Differential Calculus:},
	publisher = {U.N. Dhur & Sons Pvt. Ltd.,},
	year = {2024.},
	address = {Kalkata:},
	edition = {57th ed.},
	note = {Includes Index}
}