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- Geological Survey (U.S.)128
- United States. Defense Mapping Agency. Hydrographic Center33
- Tanzania. Idara ya Upimaji na Ramani32
- United States. Defense Mapping Agency. Hydrographic/Topographic Center9
- Froelich, A. J. (Albert Joseph), 1929-3
- Geological Survey (South Africa)3
- McCain, Jerald F.3
- Shampine, William J.3
- United States. Army Map Service3
- United States. Central Intelligence Agency3
- United States. Forest Service. Eastern Region3
- Waldrop, Henry A.3
- Chandler, Robert V.2
- Christiansen, Robert L.2
- Cornwall, Henry Rowland, 1913-2
- Driscoll, Linda B.2
- Gibbons, Anthony B.2
- Institut géographique national (France). Centre de Yaoundé.2
- Kehn, Thomas M.2
- Kenner, William E.2