1. Cassady , M.J. Pfau , J.P. Wickramanayake , G.B. Literature Study of Low Contaminant Levels of Organics in Soils and of Their Potential for Permeation Through Plastic Pipe Battelle, Columbus Division 1985
2. Cassady , M.J. Phase One Report on Evaluation of the Permeation of Organic Solvents Through Gasketed Jointed and Unjointed Polyvinyl Chloride, Asbestos-Cement and Ductile Iron Water Pipes Battelle Columbus Laboratories
3. Robert P. Walker is executive director of the Uni-Bell PVC Pipe Association, 2655 Villa Creek Drive, Dallas, TX 75234.
4. Turney , W. Taste and Odor Complaint Solved The Overflow 1980