[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1971.<NA217-106>
国立国会図書館
[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1970-<NA217-154>
国立国会図書館
by Homer T. Kemp, Robert L. Little, Verna L. Holoman, Ralph L. Darby[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1973
全国の図書館
by Byron J. Mechalas, Kenneth K. Hekimian, Lewis A. Schinazi, Ralph H. Dudley[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1972
全国の図書館
[by Batelle's Columbus Laboratories.] for the Environmental Protection Agency, Water Quality Office[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1971
全国の図書館
[by Arthur D. Little, Inc.] for the Environmental Protection Agency.[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1971
全国の図書館
by Virginia Polytechnic Institute for the Water Quality Office, Environmental Protection Agency. [Authors: William R. Walker and William E. Cox][Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1970
全国の図書館
[Authors: Thomas R. A. Davis and others. Prepared] for the Environmental Protection Agency, Water Quality Office[Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.1970
全国の図書館