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- Geological Survey (U.S.)459
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- Tanzania. Idara ya Upimaji na Ramani34
- United States. Central Intelligence Agency14
- United States. Forest Service7
- National Wetlands Inventory (U.S.)5
- Veillette, J. J.5
- Nordkalott Project4
- Geological Survey of Canada3
- Institut français du pétrole. Bureau d'études industrielles et de coopération3
- National Geographic Society (U.S.). Cartographic Division3
- Nelles Verlag3
- Robertson Research International3
- United States. Bureau of Land Management3
- Automóvil Club Argentino. Sector de Cartografía Vial y Turística2
- Aylsworth, J. M.2
- Cyprus. Tmēma Geōlogikēs Episkopēsēs, compiler, issuing body2
- Falk-Verlag, cartographer2
- Fuller, H. Kit2
- National Earthquake Information Center2
