@book{115267,
	author = {Turner, R. Kerry. and Georgiou, Stavros G. and ebrary, Inc.},
	title = {Valuing ecosystem services},
	publisher = {Earthscan,},
	year = {2008.},
	address = {London ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10256334}
}