@book{26344,
	author = {Jillson, Willard Rouse,},
	title = {The coal industry in Kentucky.},
	publisher = {Kentucky Geological Survey,},
	year = {1924.},
	series = {Kentucky geological survey. Ser. VI [Geologic reports] v. 20},
	address = {Frankfort, Kentucky,},
	edition = {2d ed.,}
}