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ProQuest (Firm)
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United States. National Aeronautics and Space Administration
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Geological Survey (U.S.)
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U.S. Customs Service
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Mexico. Dirección General de Geografía del Territorio Nacional
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United States. Congress. House. Committee on Natural Resources
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United States. Congress. Senate. Committee on Foreign Relations
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Taylor & Francis
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Ames Research Center
62 results
Brebbia, C. A.
59 results
Lewis Research Center
58 results
United States. Congress. Senate. Committee on the Judiciary
55 results
United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
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United States. Congress. Senate. Committee on Public Lands and Surveys
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NASA Glenn Research Center
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United States. Congress. House. Committee on Appropriations
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United States. Congress. House. Committee on Interior and Insular Affairs
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Rand Corporation
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Gale (Firm)
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Institute for Computer Applications in Science and Engineering
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NetLibrary, Inc
32 results
United States. Department of the Treasury
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United States. National Aeronautics and Space Administration. Scientific and Technical Information Office
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United States. Central Intelligence Agency
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United States. Congress. House. Committee on Resources. Subcommittee on National Parks, Recreation, and Public Lands
29 results
United States. Congress. House. Committee on Indian Affairs
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United States. Congress. House. Committee on Military Affairs
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United States. Congress. Senate. Committee on Indian Affairs
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ebrary, Inc
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JSTOR (Organization)
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Aeronautical Research Council (Great Britain)
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International Boundary & Water Commission, United States & Mexico
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United States. Congress. House. Committee on Interstate and Foreign Commerce
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United States. Congress. Senate. Committee on Public Lands
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