@book{4183,
	author = {Heilbroner, Robert L. and ebrary, Inc.},
	title = {Visions of the future},
	publisher = {New York Public Library :},
	year = {[1996, c1995]},
	address = {New York :},
	note = {Based on a series of lectures.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10278086}
}