@book{265574,
	author = {Purves, William K.},
	title = {Life, the science of biology /},
	publisher = {Sinauer Associates ;},
	year = {c2004.},
	address = {Sunderland, Mass. :},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0410/2003022294.html}
}