@book{7054,
	author = {Apparao, K.V.S. and Rao, V.C.S.},
	title = {Soil testing :},
	publisher = {Laxmi Publications,},
	year = {2005.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/8170081378/chopaconline-20}
}