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1
History
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1Publicado 1964Washington : National Archives and Records Service, General Services Administration, 1964.118 microfilm reels ; 35 mm. + 1 guide (8 p.)Materias: “...Geological Survey (U.S.) Records and correspondence....”
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2Publicado 1949Washington, D.C. : National Archives, 1949.16 microfilm reels ; 35 mm.Materias: “...Geological Survey (U.S.) Records and correspondence....”
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3Publicado 1949Washington [D.C.] : National Archives, 1949.29 microfilm reels ; 35 mm.Materias: “...Geological Survey (U.S.) Records and correspondence....”