1. Clark, Robert M. "The Safe Drinking Water Act Implication for Planning" in Municipal Water Systems - The Challenge for Urban Resources Management", eds. David Holtz and Scott Sebastion, Holcomb Research Institute, Indiana University Press, Bloomington, Indiana, 1978, pp 117-137.
2. Blanco, Robert J. "The Nations Water Quality: Into the 21st. Century's in the proceedings of the Eleventh United States/Japan Conference on Sewage Treatment Technology , Tokyo, Japan, October 12-14, 1987, pp. 365-390.