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1
Washington, DC : U.S. Environmental Protection Agency, 1996
Version 1.0.

Government Document Book
2
Washington, DC : U.S. Environmental Protection Agency, 1996
Release 1.1.

Government Document Book
3
Washington, DC : U.S. Environmental Protection Agency, 1996
Release 1.0.

Government Document Book
4
Cincinnati, Ohio : Springfield, VA : Technical Support Center, Standards and Risk Management Division, Office of Ground Water and Drinking Water, U.S. Environmental Protection Agency ; Available for a fee from the National Technical Information Service, 1997
Release 1.0.

Government Document Book
5
by Zihlman, F. N.
[Reston, Va.] : U.S. Geological Survey, 1992

Government Document Book
6
Cincinnati, Ohio (26 W. Martin Luther King Drive, Cincinnati 45268) : The Laboratory, 1996
Version 1.3.

Government Document Book