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Author
- Geological Survey (U.S.)387
- Tanzania. Idara ya Upimaji na Ramani138
- United States. Central Intelligence Agency16
- Snyder, George L. (George Leonard), 1927-11
- Geological Survey (U.S.), author9
- Canada. Mapping and Charting Establishment8
- National Coastal Ecosystems Team (U.S.)8
- United States. Forest Service. Eastern Region8
- Instituto Geográfico Militar (Guatemala)6
- United States. Bureau of Land Management6
- Instituto Geográfico Nacional (Peru)5
- Institut géographique national (France)4
- National Geographic Society (U.S.). Cartographic Division4
- Stewart, W. D.4
- United States. Forest Service. Intermountain Region4
- Hibbard, J.3
- Pembina (Firm)3
- Soviet Union. Sovetskai︠a︡ Armii︠a︡. Generalʹnyĭ shtab3
- United States. Defense Mapping Agency. Hydrographic/Topographic Center3
- United States. Forest Service. Northern Region3
