Practitioners in a variety of environmental health and occupational health and safety fields will find these volumes handy references for resolving current problems and for obtaining a better understanding of unfamiliar areas. Practitioners and administrators in other areas, such as food processing, water-quality control, occupational health and safety, and solid and hazardous waste management, will also find these reference books useful. High school teachers often must introduce environmental health topics in their classes and yet have no specific background in this area. They can be used as a text in graduate education courses for high school teachers as well as a reference, the material divides easily into two separate courses.