@book{80224,
	author = {Engineering Foundation Conference on Need for National Policy for the Use of Underground Space and American Society of Civil Engineers},
	title = {Need for national policy for the use of underground space :},
	publisher = {American Society of Civil Engineers,},
	year = {1973},
	address = {New York :},
	note = {Held at Berwick Academy, South Berwick, Maine, June 25-29, 1973}
}