@book{9942,
	author = {Ireland, H. A. and Sharpe, C. F. Stewart},
	title = {Principles of gully erosion in the Piedmont of South Carolina /},
	publisher = {U.S. Dept. of Agriculture,},
	year = {1939.},
	series = {Technical bulletin / United States Department of Agriculture ;},
	address = {Washington :},
	note = {Cover title.}
}