@book{41502,
	author = {National Research Council (U.S.). and Butler, Robert N., and ebrary, Inc.},
	title = {Aging in today's environment},
	publisher = {National Academy Press,},
	year = {1987.},
	address = {Washington, D.C. :},
	note = {Committee chairmen: Robert N. Butler and Emil A. Pfitzer.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10068339}
}