@book{251642,
	author = {Mader, Sylvia S.},
	title = {Essentials of biology /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2007.},
	address = {Boston :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0665/2005051119-d.html}
}