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1878 Studies found for: North Dakota, United States
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Map Legend
Region Name Number of Studies
World 1,878  
Africa   [map]   213  
Central America   [map]   337  
East Asia   [map]   251  
Japan 111   [studies]
Europe   [map]   508  
Middle East   [map]   221  
North America 1,878  
Canada   [map]   706   [studies]
Mexico 209   [studies]
United States   [map]   1,878   [studies]
North Asia   [map]   250  
Pacifica   [map]   363  
South America   [map]   268  
South Asia   [map]   116  
Southeast Asia   [map]   144  

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