@book{24617,
	author = {Kral, David M,},
	title = {Universal Soil Loss Equation: Past, Present, and Future /},
	publisher = {Soil Science Society of America,},
	year = {1979.},
	series = {SSSA Special Publications Number 8},
	address = {Madison, Wisconsin :},
	note = {Incluye Bibliografía.}
}