@book{61584,
	author = {Ratcliffe, Derek A. and Nature Conservancy Council (Great Britain)},
	title = {A nature conservation review :},
	publisher = {Cambridge University Press,},
	year = {1977},
	address = {Cambridge ;},
	note = {Published on behalf of the Nature Conservancy Council and the Natural Environment Research Council},
	url = {http://www.loc.gov/catdir/enhancements/fy1101/76011065-t.html}
}