@book{19622,
	author = {Beerling, D. J. and Woodward, F. I. and ebrary, Inc.},
	title = {Vegetation and the terrestrial carbon cycle},
	publisher = {Cambridge University Press,},
	year = {2001.},
	address = {Cambridge :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10001841}
}