@book{64520,
	author = {Spellman, Frank R.},
	title = {Stream ecology and self-purification : an introduction for wastewater and water specialists /},
	publisher = {Technomic Pub.,},
	year = {c1996.},
	address = {Lancaster, Pa. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0646/95062015-d.html}
}