@book{29785,
	author = {Petersen, Roger G.,},
	title = {Agricultural field experiments :},
	publisher = {M. Dekker,},
	year = {c1994.},
	series = {Books in soils, plants, and the environment},
	address = {New York :},
	url = {http://www.loc.gov/catdir/enhancements/fy0647/93043399-d.html}
}