@book{26824,
	author = {Bownocker, J. A. and Dean, Ethel S.},
	title = {Analyses of the coals of Ohio /},
	editor = {Kelly-Springfield Printing Co.)},
	publisher = {Geological Survey of Ohio,},
	year = {1929},
	series = {Bulletin ;},
	address = {Columbus, Ohio :},
	note = {Some maps are folded.}
}