THE ORIGIN AND EXTENT OF THE PCB PROBLEM PCBa#39;s were only recently recognized to be persistent and widespread threats to the environment. They have been shown to cause cancer in test animals, and they do not break down in theanbsp;...
|Title||:||National accomplishments in pollution control, 1970-1980|
|Author||:||United States. Environmental Protection Agency. Office of Planning and Evaluation, United States. Environmental Protection Agency. Office of Public Awareness|