@book{205743,
	author = {Midddleton, H. E. and Byers, H. G.},
	title = {The phisical and chemical characteristics of the soils from the erosion experiment stations second report  /},
	publisher = { USDA. Erosion Experiment Station},
	address = {Washington , D.C.  :},
	note = {Enc. con otros impresos similares}
}