@book{501,
	author = {Karp, Gerald. and Geer, Peter van der.},
	title = {Cell and molecular biology :},
	publisher = {John Wiley,},
	year = {c2005.},
	address = {Hoboken, NJ :},
	edition = {4th ed.},
	note = {"Web site password enclosed."},
	url = {http://www.loc.gov/catdir/description/wiley041/2004053023.html}
}