@book{193178,
	author = {Cullen, Katherine E.},
	title = {Encyclopedia of life science(E-BOOK)},
	publisher = {Facts On File,},
	year = {c2009.},
	series = {Facts on File science library},
	address = {New York :},
	url = {http://www.loc.gov/catdir/toc/ecip0815/2008016224.html}
}