Third international conference on new frontiers for hazardous waste management : Proceedings of a Conference held Sept. 10–13, 1989 in Pittsburgh, PA, by U.S. Environmental Protection Agency, Risk Reduction Laboratory, Cincinnati, OH, Aug. 1989, EPA No. 600/8-89/077. Available from Superintendent of Documents. U.S. Government Printing Office, Washington, DC, 605 pp., ISBN not available; no price given.