@book{172836,
	author = {Calow, Peter. and ebrary, Inc.},
	title = {Blackwell's concise encyclopedia of ecology},
	publisher = {Blackwell Science,},
	year = {1999.},
	address = {Oxford [England] ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10303780}
}