Geography
United States
17 results
Great Britain
3 results
China
2 results
Earth (Planet)
2 results
Asia
1 results
California
1 results
Cambridge
1 results
College Park (Md.)
1 results
Dakar
1 results
England
1 results
Europe
1 results
France
1 results
Genf <1993>
1 results
Germany
1 results
Italy
1 results
Japan
1 results
Leaf River
1 results
Madison
1 results
Maryland
1 results
Mississippi
1 results
Notre Dame <Ind., 1996>
1 results
Pennsylvania
1 results
Pittsburgh
1 results
Poland
1 results
Santiago <1987>
1 results
Senegal
1 results
Soviet Union
1 results
Texas
1 results
URSS
1 results
USSR
1 results
United States, Central
1 results
Wisconsin
1 results
États-Unis
1 results