@book{16266,
	author = {Copeland, L. O. and McDonald, M. B.},
	title = {Principles of seed science and technology /},
	publisher = {Kluwer Academic Publishers,},
	year = {c2001.},
	address = {Boston :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0820/2001029245-d.html}
}