Book excerpt: Hazard Assessment of Chemicals: Current Developments, Volume 4 serves as a forum for the exposition, evaluation, and analysis of methods, techniques, applications, and approaches in the field of chemical hazard assessment. The text consists of articles tackling subjects in certain areas of chemical hazard assessment. Topics discussed include hazardous substances data bases; field instruments for identifying hazardous materials; water quality criteria for the protection of aquatic life; and the role of environmental chemicals in reproductive failure and teratogenicity. Environmentalists, ecologists, toxicologists, public safety officers and workers, and those concerned with the health effects of chemical agents in the environment will find this book very interesting.