@book{22707,
	author = {Essington, Michael E.},
	title = {Soil and water chemistry :},
	publisher = {CRC Press,},
	year = {c2004},
	address = {Boca Raton :},
	url = {http://www.loc.gov/catdir/enhancements/fy0646/2003058468-d.html}
}