@book{15674,
	author = {Davidson, Donald A. and Davidson, Donald A.},
	title = {The evaluation of land resources /},
	publisher = {Longman Scientific & Technical ;},
	year = {1992.},
	address = {Harlow, Essex, England :},
	edition = {2nd ed.},
	note = {Rev. ed. of: Soils and land use planning. 1980.}
}