@book{111506,
	author = {Wrigley, E. A. and ebrary, Inc.},
	title = {Poverty, progress, and population},
	publisher = {Cambridge University Press,},
	year = {2004.},
	address = {Cambridge :},
	note = {Includes articles previously published or soon to be published in scholarly journals.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10120478}
}