مؤلف: R. Allan Freeze

R. Allan Freeze is one of North America”s leading researchers in the field of environmental water quality, and has acted as the consulting engineer on drinking water quality at a number of sites across North America. He was a member of the University of British Columbia”s engineering faculty in Vancouver for twenty years and is the author of over 150 technical articles and the coauthor of several books. Jay H. Lehr is Senior Scientist with The Heartland Institute and Chief Scientist for Earth Water Global, an international water supply company. A graduate of Princeton University, he developed the first Ph D program in hydrology at the University of Arizona and was on the faculty at The Ohio State University. Lehr has authored or coauthored over twenty books, hundreds of journal and magazine articles, and is an internationally renowned expert who speaks worldwide on environmental topics.