@book{30430,
	author = {Englund, Kenneth John,},
	title = {Geology and coal resources of the Elk Valley area, Tennessee and Kentucky,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1968.},
	series = {United States. Geological Survey. Professional paper},
	address = {Washington,},
	note = {Part of illustrative matter in pocket.}
}