@book{43285,
	author = {United States},
	title = {To amend the Federal coal mine health and safety act of 1969.},
	publisher = {U.S. Govt. Print. Off.},
	year = {1971.},
	address = {Washington},
	note = {Hearings held in Washington, D.C., Mar. 9-11, 1971 and in Hazard, Ky., Mar. 12-13, 1971.}
}