@book{282729,
	author = {United States.},
	title = {Abandoned mined land reclamation needs of the Pennsylvania anthracite fields :},
	publisher = {U.S. Government Printing Office,},
	year = {2000.},
	address = {Washington :},
	note = {"Serial no. 106-82."},
	url = {http://purl.access.gpo.gov/GPO/LPS9199}
}