@book{9415,
	author = {Gertz, Steven M. and Weston, Roy F.},
	title = {Statistics in the environmental sciences :},
	publisher = {Astm Intl,},
	year = {1984.},
	series = {Astm special technical publication// stp.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0803102062/chopaconline-20}
}