Analysis of pollution control costs

Doyle, Frank J.
Washington : Office of Research and Development, U.S. Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1974.

The appearance and visibility of thin oil films on water.

Horstein, Bernard.
Cincinnati,Ohio : National Environmental Research Center : Office of Research and Monitoring : U.S. Environmental Protection Agency, 1972.

Evaluation of waste waters from petroleum and coal processing

Reid, George W. (George Willard), 1917-1987.
Washington : U. S. Environmental Protection Agency, Office of Research and Monitoring, 1972[that is, 1973]