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Author
- Geological Survey (U.S.)203
- Lebanon. Wizārat al-Difāʻ al-Waṭanī.10
- Tanzania. Idara ya Upimaji na Ramani9
- Thorsteinsson, R.7
- United States. Central Intelligence Agency5
- Geological Survey of Alabama3
- United States. Army Topographic Command3
- Arndt, Harold H.2
- Goudarzi, Gus H. (Gus Hossein), 1918-2
- Harkins, Joe R., 1926-2
- Harwood, David S.2
- Hoare, J. M.2
- Hussey, Arthur M.2
- Neuerburg, George J.2
- New Zealand Forest Service2
- Ontario. Department of Mines and Northern Affairs2
- Rand McNally and Company2
- Richmond, Gerald Martin, 1914-2
- Richter, Donald H.2
- Seiders, Victor M.2
