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- Arctic Climate System (ACSYS)47
- International Association of Seismology and Physics of the Earth's Interior10
- International Heat Flow Commission10
- Oklahoma State University. Department of Geography. Cartography Service10
- Central Intelligence Agency9
- Instituto Brasileiro de Geografia e EstatÃstica5
- Chandler, Val W.4
- Digital Social Science Center (DSSC), Columbia University Libraries2
- Boerboom, Terrence J.1
- Centre County Natural Heritage Inventory1
- Dahl, Thomas E.1
- Geological Survey (U.S.)1
- Illinois State Geological Survey1
- Jirsa, Mark A.1
- McSwiggen, Peter L.1
- Morey, G.B.1
- National Atlas of the United States1
- National Wetlands Inventory (U.S.)1
- Provincial Centre for Geographic Information Services (Zambia)1
- Tompkins County Planimetric Project1