Corvallis, Oreg. : U.S. Environmental Protection Agency, Office of Research and Monitoring National Environmental Research Center : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1974
Prepared by Southeast Environmental Research Laboratory, Athens, Ga., and Southern Piedmont Conservation Research Center, Soil, Water, and Air Sciences, Southern Region, Agricultural Research Service, U.S. Dept. of Agriculture, Watkinsville, Ga., under program element 1BB039.