@book{4194,
	author = {Clarke, Robin.},
	title = {The handbook of ecological monitoring /},
	publisher = {Clarendon Press ;},
	year = {1986.},
	address = {Oxford :},
	note = {"A GEMS/UNEP publication."},
	url = {http://www.loc.gov/catdir/enhancements/fy0639/85029744-d.html}
}