@book{19586,
	author = {Cresser, Malcolm S. and Edwards, Anthony,},
	title = {Acidification of freshwaters /},
	publisher = {Cambridge University Press,},
	year = {1987.},
	address = {Cambridge [Cambridgeshire] ;},
	url = {http://www.loc.gov/catdir/enhancements/fy1007/86026907-d.html}
}