The effect of ozonation of organics in wastewaterWillard R Chappell · First published 1981Open the Tome
Human health effects of molybdenum in drinking waterWillard R. Chappell, Robert R. Meglen, University of Colorado, Boulder, Health Effects Research Laboratory (Cincinnati, Ohio) · First published 1979Open the Tome
Molybdenum in the environmentWillard R. Chappell · First published 1976 · Latest edition 1977Open the Tome
