Region
United States
159
Great Britain
87
Austria
14
Canada
13
France
13
Developing countries
10
Hungary
9
Australia
8
Germany
8
Italy
8
Mexico
7
Europe
6
Soviet Union
6
Ireland
5
Latin America
5
Africa
4
Argentina
4
India
4
New Zealand
4
Norway
4
Bangladesh
3
Japan
3
Scotland
3
Sweden
3
Adelaide (S.A.)
2
China
2
Denmark
2
England
2
Europe, Central
2
Foreign countries
2
Osaka (Japan)
2
Poland
2
Russia
2
South Australia
2
Southeast Asia
2
Southwestern States
2
Switzerland
2
Tennessee
2
Adelaide
1
Amazon River Region
1
Berkeley
1
Birmingham (England)
1
California
1
Cambridge (Mass.)
1
Chile
1
Egypt
1
Fort Recovery
1
Freiburg im Breisgau
1
Germany (East)
1
Ghana
1
more ...