@book{4565,
	author = {Fehrenbacher, J. B. and Olson, K. R.},
	title = {Loess thickness and its effect on soils in Illinois},
	publisher = {University of Illinois,},
	year = {1986},
	series = {Bulletin},
	address = {Urbana, Champaign :},
	note = {53-415}
}