Government Document eBook 280 results 280 Book 150 results 150 Microform 11 results 11 Map 10 results 10 Video 10 results 10 Serial 9 results 9 Database 8 results 8 DVD 7 results 7 Software 7 results 7 Conference Proceeding 4 results 4 Journal 4 results 4 Photo 4 results 4 Electronic 2 results 2 Audio 1 results 1 CD 1 results 1 see all…

ProQuest (Firm) 53 results 53 United States. National Aeronautics and Space Administration 24 results 24 Geological Survey (U.S.) 20 results 20 Smithsonian Institution. Office of the Secretary 17 results 17 United States. Bureau of Plant Industry 16 results 16 United States. Congress. Senate. Committee on Energy and Natural Resources 10 results 10 United States. Agricultural Research Service 9 results 9 Federal Judicial Center 8 results 8 Drew, Lawrence J. 7 results 7 National Science Foundation (U.S.) 6 results 6 United States. National Park Service 6 results 6 Goddard Space Flight Center 5 results 5 Smithsonian Institution 5 results 5 United States. Army. Corps of Engineers 5 results 5 United States. Bureau of Mines 5 results 5 United States. Congress. House. Committee on Coinage, Weights, and Measures 5 results 5 United States. War Department 5 results 5 Ames Research Center 4 results 4 Langley Research Center 4 results 4 National Institute of Standards and Technology (U.S.) 4 results 4 National Institutes of Health (U.S.) 4 results 4 Schuenemeyer, J. H. 4 results 4 United States. Congress. House. Committee on Science, Space, and Technology (2011- ). Subcommittee on Energy 4 results 4 United States. Congress. Senate. Committee on Commerce, Science, and Transportation 4 results 4 Dall, William Healey, 1845-1927 3 results 3 EBSCOhost 3 results 3 Gilmore, Charles W. (Charles Whitney), 1874-1945 3 results 3 Hedges, Ronald J. 3 results 3 Library of Congress 3 results 3 McKinney, Kevin C. 3 results 3 see all…

English 474 results 474 Spanish 3 results 3 French 2 results 2

United States 165 results 165 Outer space 23 results 23 Alaska 17 results 17 Antarctica 15 results 15 California 12 results 12 American Discovery Trail 11 results 11 West (U.S.) 11 results 11 Colorado 9 results 9 Texas 8 results 8 Mexico, Gulf of 7 results 7 America 6 results 6 New Mexico 5 results 5 Yellowstone National Park 5 results 5 Arctic regions 4 results 4 Delaware 4 results 4 Rocky Mountains 4 results 4 Washington (State) 4 results 4 Arctic Ocean 3 results 3 Atlantic Coast (U.S.) 3 results 3 France 3 results 3 Gulf of Mexico 3 results 3 Hawaii 3 results 3 Idaho 3 results 3 Illinois 3 results 3 Lake Clark National Park and Preserve (Alaska) 3 results 3 Mexico 3 results 3 Montana 3 results 3 North America 3 results 3 Polar regions 3 results 3 South Dakota 3 results 3 see all…