« Previous
Next »
Author/Creator
- Geological Survey (U.S.)[remove]3,226
- United States. National Aeronautics and Space Administration291
- Planetary Geology Program (U.S.)173
- Afghanistan. Department of Geological Survey101
- Turner, Kenzie J.78
- United States. Agency for International Development77
- Afghanistan. Idārah-i ʻUmūmī-i Jiyūdīzī va Kārtūgrāfī70
- United States. National Park Service69
- Davis, Philip A. (Philip Arthur), 1950-66
- Bohannon, Robert G.58
- Clark, Perry S.53
- Planetary Geology and Geophysics Program (U.S.)35
- United States. National Oceanic and Atmospheric Administration35
- Afghan Geological Survey33
- Southwest Florida Water Management District (Fla.)32
- Afghanistan. Geological and Mineral Survey30
- United States. Environmental Protection Agency30
- U.S. Task Force for Business and Stability Operations29
- Davis, Philip A.26
- United States. Bureau of Land Management25