Geographic Subject
India
12
Canada
7
Austria
6
Brazil
6
British Columbia
4
Malaysia
3
Peru
3
South Africa
3
France
2
Germany (West)
2
Japan
2
Russia
2
West (U.S.)
2
Africa, Southern
1
Australia
1
Australie
1
Bahia (State)
1
Belgium
1
California
1
Chile
1
China
1
Germany
1
Nova Scotia
1
Queensland
1
Southwestern States
1
Soviet Union
1
Venezuela
1
Yugoslavia
1