@book{25768,
	author = {Leverett, Frank, and Sardeson, Frederick William, and University of Minnesota.},
	title = {Surface formations and agricultural conditions of northeastern Minnesota,},
	publisher = {The University of Minnesota,},
	year = {1917.},
	series = {Minnesota Geological Survey. Bulletin},
	address = {Minneapolis,},
	note = {At head of title: The University of Minnesota.}
}