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1
por Steele, Brenda A.
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Open-File Reports Section, U.S. Geological Survey, 1987
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Open-File Reports Section, U.S. Geological Survey, 1987
Documento de Gobierno
Libro
2
por Hansley, Paula L.
Washington, D.C. : Denver, CO : U.S. G.P.O. ; For sale by U.S. Geological Survey, Information Services, 1995
Washington, D.C. : Denver, CO : U.S. G.P.O. ; For sale by U.S. Geological Survey, Information Services, 1995
Documento de Gobierno
Libro
3
por Hansley, Paula L.
Washington : United States Government Printing Office, 1995
Washington : United States Government Printing Office, 1995
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Documento de Gobierno
Libro
4
por Yochelson, Ellis L. (Ellis Leon), 1928-2006
Washington, U.S. Govt. Print. Off., 1968
Washington, U.S. Govt. Print. Off., 1968
Documento de Gobierno
Libro
5
por Steele, Brenda A.
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Open-File Reports Section, U.S. Geological Survey, 1987
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Open-File Reports Section, U.S. Geological Survey, 1987
Documento de Gobierno
Libro
6
por McKelvey, V. E. (Vincent Ellis), 1916-
Washington : U.S. Govt. Print. Off., 1959
Washington : U.S. Govt. Print. Off., 1959
Documento de Gobierno
Libro
7
por McKee, Edwin D. (Edwin Dinwiddie), 1906-1984
Washington, D.C. : Carnegie Institution of Washington, 1938
Washington, D.C. : Carnegie Institution of Washington, 1938
Libro