Author
Davis, Philip A. (Philip Arthur), 1950-
Afghanistan. Department of Geological Survey
63 results
Afghanistan. Idārah-i ʻUmūmī-i Jiyūdīzī va Kārtūgrāfī
63 results
Geological Survey (U.S.)
63 results
Turner, Kenzie J.
63 results
United States. Agency for International Development
63 results
United States. Bureau of Reclamation
1 results
United States. Western Area Power Administration
1 results