@book{74881,
	author = {Verma P.S. and Agarwal, V.K. },
	title = {Cell Biology, Genetics, Molecular Biology, Evolution and Ecology /},
	publisher = {S.Chand & Company Ltd,},
	year = {1975 },
	address = {New Delhi:},
	edition = {2nd rev. & enl. ed.}
}