Geographic Subject
Germany
35
Indonesia
35
Soviet Union
33
India
32
United States
32
France
19
Switzerland
15
Great Britain
12
Russia (Federation)
11
Germany (West)
10
Africa
9
Australia
8
Europe
7
Poland
6
Singapore
5
Argentina
4
Asia, Southeastern
4
Sri Lanka
4
Uruguay
4
European Economic Community countries
3
Malaysia
3
Namibia
3
Sweden
3
Africa, West
2
Arctic regions
2
China
2
Earth
2
Nepal
2
New England
2
Tyskland
2
Africa, East
1
Africa, French-speaking Equatorial
1
Africa, North
1
Africa, Sub-Saharan
1
Ahaggar Mountains (Algeria)
1
Arabian Peninsula
1
Asia
1
Australasia
1
Austria
1
Barbados
1
Bombay (India : State)
1
Bombay (State)
1
Burma
1
California
1
Congo (Democratic Republic)
1
Czech Republic
1
Developing countries
1
Ethiopia
1
European Union countries
1
Finland
1
more ...