@book{25354,
	author = {Hutchinson, F. M.},
	title = {Report on the geology and coals of the Central City, Madisonville, Calhoun, and Newberg quadrangles in Muhlenberg, Hopkins, Ohio, McLean, Webster, Daviess and Henderson Counties.},
	year = {1912.},
	address = {[n.p.]}
}