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33977 Studies found for: standard AND United States

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Map Legend
Region Name Number of Studies
World 33,977
Africa [map] 511
Central America [map] 544
East Asia [map] 1,277
Japan 616 [studies]
Europe [map] 2,928
Middle East [map] 969
North America 33,466
Canada [map] 2,179 [studies]
Mexico 568 [studies]
United States [map] 33,411 [studies]
North Asia [map] 837
Pacifica [map] 1,219
South America [map] 940
South Asia [map] 347
Southeast Asia [map] 521

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.