Subject Region
United States
276
Great Britain
182
France
62
Germany
46
England
45
Soviet Union
24
Europe
19
Spain
18
Canada
16
Greece
14
English-speaking countries
12
Latin America
12
Russia
11
Russia (Federation)
10
Scotland
9
Ireland
8
Japan
8
Rome
8
Southern States
7
India
6
Africa
5
Argentina
5
Italy
5
Cuba
4
New York
4
New York (State)
4
North America
4
China
3
Developing countries
3
Germany (East)
3
Germany (West)
3
Hungary
3
Massachusetts
3
Mediterranean Region
3
America
2
America Latina
2
Arab countries
2
Cambridge
2
Chile
2
Espana
2
London
2
London (England)
2
Paris
2
Poland
2
Québec (Province)
2
Slavic countries
2
Sweden
2
Uruguay
2
Venezuela
2
Australia
1
more ...