@book{37049,
	author = {Biswas, S. B. and Biswas, Amita},
	title = {A Introduction to viruses /},
	publisher = {Vikas Pub,},
	year = {1998.},
	address = {New Delhi :},
	edition = {4th rev.ed.},
	note = {Includes bibliographical references and index.}
}