@book{16986,
	author = {McDonald, M. B. and Crop Science Society of America. CSSA. },
	title = {The role of seed certification in the seed industry /},
	publisher = {Crop Science Society of America,},
	year = {1985.},
	series = {CSSA special publication ;},
	address = {Madison, WI :},
	note = {Proceedings of a symposium.. Las Vegas,Nv., 29,Nov.1984.}
}