Geography
United States
80 results
Texas
67 results
Europe
16 results
Africa
4 results
Asia
4 results
Great Britain
4 results
Developing countries
3 results
Arizona
2 results
Galveston Bay
2 results
Galveston Bay (Tex.)
2 results
Great Lakes (North America)
2 results
India
2 results
Indian Ocean
2 results
Latin America
2 results
Mexican-American Border Region
2 results
Mexico
2 results
Nevada
2 results
North America
2 results
North Atlantic Ocean
2 results
Oceania
2 results
Pacific Ocean
2 results
Tropics
2 results
Africa, North
1 results
Alaska
1 results
America
1 results
Amerika
1 results
Arctic regions
1 results
Bangladesh
1 results
Belgium
1 results
California
1 results
Caribbean Area
1 results
Communist countries
1 results
Germany (East)
1 results
Grand Banks of Newfoundland
1 results
Hawaii
1 results
Houston
1 results
Hudson River (N.Y. and N.J.)
1 results
Islamic countries
1 results
LaJolla <1992>
1 results
Mediterranean Region
1 results
Mexico, Gulf of
1 results
Middle East
1 results
Missouri River Basin
1 results
Nepal
1 results
Oregon
1 results
Pacific Area
1 results
Rajasthan
1 results
Rio Grande Valley (Colo.-Mexico and Tex.)
1 results
South Asia
1 results
South Carolina
1 results
more…