@book{9446,
	author = {Isom, Billy G. and Dennis, Sally D.},
	title = {Impact of acid rain and deposition on aquatic biological systems /},
	publisher = {Astm Intl,},
	year = {1986.},
	series = {Astm special technical publication// stp.},
	address = {[S.l.] :},
	edition = {0th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0803104928/chopaconline-20}
}