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1
[Reston, Va.?] : Denver, CO : Dept. of the Interior, U.S. Geological Survey ; For sale by the Books and Open-File Reports Section, 1990

Government Document Book
2
by Ruppel, Edward Thompson, 1925-
Washington : Alexandria, Va. : U.S. G.P.O. ; For sale by the Branch of Distribution, U.S. Geological Survey, 1982

Government Document Book
3
by Ruppel, Edward Thompson, 1925-
Washington : Alexandria, Va. : U.S. Govt. Print. Off. ; for sale by the Branch of Distribution, U.S. Geological Survey, 1982

Government Document Book