@book{493,
	author = {Theraja, B. L. and Theraja, A. K.},
	title = {A text-book of technology},
	publisher = {S. Chand,},
	year = {c1994.},
	series = {Sultan Chand Series},
	address = {New Delhi:},
	edition = {Rep.},
	note = {Includes index.}
}