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Call Number Author Topic Genre Region Era

By Alphabetical By Call Number By Topic By Genre By Region By Era

United States 185,816 View Records Colorado 28,588 View Records California 8,613 View Records Great Britain 7,121 View Records China 5,252 View Records Alaska 5,231 View Records Europe 3,888 View Records New Mexico 3,855 View Records Utah 3,843 View Records Arizona 3,598 View Records Nevada 3,348 View Records West (U.S.) 3,190 View Records Texas 3,154 View Records Wyoming 2,963 View Records Montana 2,939 View Records Oregon 2,921 View Records Washington (State) 2,843 View Records New York (State) 2,709 View Records Florida 2,475 View Records Idaho 2,352 View Records Japan 2,332 View Records India 2,256 View Records Mexico 2,115 View Records England 2,047 View Records France 2,039 View Records Germany 1,978 View Records North America 1,834 View Records Washington (D.C.) 1,749 View Records Pennsylvania 1,693 View Records Canada 1,619 View Records Africa 1,594 View Records Asia 1,568 View Records Soviet Union 1,456 View Records Russia (Federation) 1,452 View Records Virginia 1,408 View Records Kansas 1,374 View Records Massachusetts 1,352 View Records Latin America 1,328 View Records Illinois 1,308 View Records Middle East 1,302 View Records North Carolina 1,247 View Records Southern States 1,230 View Records Louisiana 1,225 View Records Minnesota 1,197 View Records Hawaii 1,196 View Records Italy 1,173 View Records Michigan 1,166 View Records Afghanistan 1,152 View Records Missouri 1,151 View Records Developing countries 1,106 View Records Ohio 1,105 View Records Iraq 1,026 View Records South Dakota 1,019 View Records Spain 1,009 View Records Australia 999 View Records Georgia 990 View Records New York 990 View Records Wisconsin 986 View Records European Union countries 975 View Records New Jersey 935 View Records Kentucky 920 View Records Oklahoma 903 View Records Tennessee 893 View Records Arkansas 876 View Records Maryland 871 View Records Greece 858 View Records North Dakota 845 View Records South Carolina 822 View Records Iran 802 View Records Southwest, New 801 View Records Outer space 751 View Records Nebraska 743 View Records Rome 739 View Records Mississippi 730 View Records Alabama 728 View Records Puerto Rico 726 View Records Russia 713 View Records Indiana 652 View Records Iowa 649 View Records America 621 View Records Maine 620 View Records Brazil 618 View Records West Virginia 618 View Records Israel 606 View Records Mexico, Gulf of 594 View Records Cuba 578 View Records Northwest, Pacific 565 View Records Connecticut 508 View Records Egypt 496 View Records Pakistan 493 View Records Middle West 485 View Records Mars (Planet) 470 View Records Vietnam 466 View Records South Africa 456 View Records Turkey 453 View Records Ireland 451 View Records Earth (Planet) 441 View Records New England 441 View Records San Juan County 434 View Records Mexican-American Border Region 426 View Records

Geological Survey (U.S.) 931 Geological Survey (U.S.), 473 United States. Forest Service. Southwestern Region 113 United States. National Park Service 103 United States. Bureau of Land Management 100 United States. Bureau of Reclamation 89 Arizona. Department of Water Resources 87 United States. Forest Service. Southwestern Region, 82 United States. Bureau of Indian Affairs 81 U.S. Atomic Energy Commission 68 United States. Bureau of Land Management. Arizona State Office 66 Billingsley, George H. 50 United States. Bureau of Mines 48 United States. Bureau of Land Management, 44 United States. Congress. Senate. Committee on Energy and Natural Resources 40 National Operations Center (U.S.), 38 United States. Bureau of Land Management. Arizona State Office, 38 Rocky Mountain Research Station (Fort Collins, Colo.) 36 Wilson, Eldred Dewey, 1898-1965 32 United States. Congress. House. Committee on Natural Resources, 31 United States. National Park Service, 31 United States. Forest Service 30 United States, 27 Drewes, Harald, 1927-2015 26 U.S. Atomic Energy Commission. Division of Raw Materials 26 United States. Forest Service, 26 University of Arizona. State Bureau of Mines 25 Flood Control District of Maricopa County 24 U.S. Fish and Wildlife Service 24 United States. Congress. House. Committee on Natural Resources 24 United States. National Park Service. Natural Resource Stewardship and Science, 24 Krieger, Medora Louise Hooper, 1905- 23 United States. Congress. House. Committee on Resources 23 United States. Congress. Senate. Committee on Indian Affairs (1993- ) 23 United States. Congress. Senate. Committee on Energy and Natural Resources, 21 National Operations Center (U.S.) 19 Witkind, Irving J. 1917-2008 19 National Science and Technology Center (U.S.) 18 University of Arizona. Bureau of Geology and Mineral Technology 18 Wenrich, Karen J. 18 Arizona Water Commission 17 Moore, Richard T. 17 Pallister, John S. 16 Tucson (Ariz.) 16 Creasey, S. C. 1917- 15 Simons, Frank S. 1917- 15 Du Bray, E. A. 14 Ffolliott, Peter F. 14 National Water-Quality Assessment Program (U.S.) 14 Tonto National Forest (Agency : U.S.), 14 Anderson, T. W. 1940- 13 Arizona Geological Society 13 Brown, James G. 1956- 13 Drewes, Harald, 1927-2015, 13 Macy, J. P. 13 Coconino National Forest (Agency : U.S.), 12 Cooper, John R. 1907- 12 Educational Resources Information Center (U.S.) 12 National Applied Resource Sciences Center (U.S.) 12 Navajo Tribe of Arizona, New Mexico & Utah 12 Northern Arizona University 12 Rocky Mountain Research Station (Fort Collins, Colo.), 12 United States. Congress. House. Committee on Interior and Insular Affairs 12 United States. Congress. Senate. Committee on Indian Affairs (1993- ), 12 United States. Natural Resources Conservation Service 12 Van Gosen, B. S. 1960- 12 Aldridge, B. N. 11 Arizona. State Land Department 11 Grand Canyon Monitoring and Research Center 11 Hayes, Philip T. 1923- 11 Kieffer, Susan W. 11 Lucchitta, Ivo 11 Marshall, C. H. 11 Natural Resource Program Center (U.S.), 11 Owen-Joyce, Sandra J. 11 Pool, D. R. 11 Ransome, F. L. 1868-1935 11 Raup, Robert B. 1929- 11 U.S. Atomic Energy Commission, 11 United States. Administration on Aging 11 United States. Bureau of Land Management. Arizona Strip District 11 United States. Bureau of Land Management. Yuma District Office 11 Arizona. Department of Environmental Quality 10 Granger, H. C. 1925- 10 Gray, Floyd 10 Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona 10 Leake, S. A., 10 Pima County (Ariz.). Department of Transportation and Flood Control District 10 Pool, D. R., 10 Salt River Project 10 United States. Bureau of Land Management. Phoenix District Office 10 United States. Bureau of Land Management. Safford District 10 United States. Congress. Senate. Committee on Indian Affairs, 10 United States. National Park Service. Denver Service Center 10 Anderson, Charles A. 1902-1990 9 Arizona. Game and Fish Department 9 Billingsley, George H., 9 Farrar, C. D. 9 Gellenbeck, D. J. 9 Hardwick, W. R. 9