@book{28011,
	author = {Klingebiel, A. A. and Montgomery, P. H. and E.U.A. Department of Agriculture.},
	title = {Clasificación por capacidad de uso de las tierras},
	publisher = {Centro Regional de Ayuda Técnica,},
	year = {1965},
	series = {Manual de agricultura},
	address = {México, D. F. :},
	edition = {4 ed.}
}