@book{8179,
	author = {Lal, R.},
	title = {Methods for assessment of soil degradation /},
	publisher = {CRC Press,},
	year = {c1998.},
	series = {Advances in soil science},
	address = {Boca Raton, Fla. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0744/97024696-d.html}
}