@book{46350,
	author = {Eash, Neal Samuel},
	title = {Soil science simplified /},
	publisher = {Blackwell Pub.,},
	year = {c2008},
	address = {Ames, Iowa :},
	edition = {5th ed.},
	note = {Prev. eds. catalogued under Milo I. Harpstead},
	url = {http://www.loc.gov/catdir/enhancements/fy0833/2007045692-t.html}
}