@book{34114,
	author = {National Research Council (U.S.). and ebrary, Inc.},
	title = {Research programs of the U.S. Bureau of Mines},
	publisher = {National Academy Press,},
	year = {1994.},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10072131}
}