@book{43651,
	author = {Allard, R. W.},
	title = {Principles of plant breeding /},
	publisher = {J. Wiley,},
	year = {c1999.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/wiley035/98047144.html}
}