Subject Region
United States
60
China
32
Latin America
21
Europe
20
Great Britain
19
India
14
Russia (Federation)
11
Europe, Eastern
10
Mexico
10
South Africa
8
France
7
Iran
7
Arab countries
6
Cuba
6
England
6
Japan
6
Australia
5
California
5
Germany
5
Greece
5
Ireland
5
Southern States
5
Soviet Union
5
America Latina
4
Argentina
4
Brazil
4
Canada
4
Egypt
4
Europe, Central
4
Hong Kong
4
Hong Kong (China)
4
Johannesburg
4
Kerala (India)
4
Lagos
4
Lagos (Nigeria)
4
Massachusetts
4
Mediterranean Region
4
Moscow (Russia)
4
New York (State)
4
Nigeria
4
North Carolina
4
Poland
4
Québec (Province)
4
Africa
3
Asia
3
Bulgaria
3
Germany (West)
3
Indonesia
3
Italy
3
Kerala
3
more ...