@book{146455,
	author = {Taylor, Howard E.},
	title = {Major ions, nutrients, and trace elements in the Mississippi River near Thebes, Illinois, July through September 1993},
	publisher = {U.S. G.P.O.},
	year = {1993.},
	series = {U.S. Geological Survey circular},
	address = {Washington, D.C.}
}