@book{14609,
	author = {Cartledge, Bryan,},
	title = {Monitoring the environment /},
	publisher = {Oxford University Press,},
	year = {1992.},
	series = {The Linacre lectures ;},
	address = {Oxford ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0640/91037355-d.html}
}