Geography
United States
15 results
Great Britain
2 results
Texas
2 results
Africa
1 results
Asia, Central
1 results
California
1 results
Cameroon
1 results
China
1 results
College Station
1 results
Developing countries
1 results
Guatemala
1 results
Houston
1 results
Houston (Tex.)
1 results
Madison
1 results
Maine
1 results
Mono Lake
1 results
New Mexico
1 results
Sierra Leone
1 results
Sweden
1 results
Tibet
1 results
Wisconsin
1 results
Yellowstone National Park
1 results