@book{33461,
	author = {National Research Council (U.S.). and National Academy Press (U.S.)},
	title = {Annual report.},
	publisher = {National Academy Press,},
	year = {1999.},
	series = {Annual report: Space Studies Board ;},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10071892}
}