क्षेत्र
United States
171
Soviet Union
94
India
62
Germany
51
Russia (Federation)
39
Great Britain
29
France
19
Pakistan
14
Massachusetts
13
Indonesia
12
China
10
Russia
8
Japan
7
Virginia
6
Europe
5
Islamic countries
5
Pennsylvania
5
Sweden
5
Bangladesh
4
Finland
4
New Hampshire
4
Switzerland
4
Boston
3
Boston (Mass.)
3
Brazil
3
Communist countries
3
Czechoslovakia
3
Europe, Eastern
3
Hungary
3
Iran
3
Malaysia
3
Netherlands
3
Nigeria
3
Poland
3
Saint Petersburg
3
South Carolina
3
Sri Lanka
3
Vietnam
3
Afghanistan
2
Africa
2
Asia, Southeastern
2
Bashkortostan (Russia)
2
Braunschweig (State)
2
Deutschland
2
Developing countries
2
Georgia
2
Hyderabad (State)
2
Inde
2
Italy
2
Laos
2
अधिक ...