Region
Adelaide
1
Adelaide (S.A.)
2
Africa
4
Amazon River Region
1
Argentina
4
Australia
8
Austria
14
Bangladesh
3
Berkeley
1
Birmingham (England)
1
California
1
Cambridge (Mass.)
1
Canada
13
Chile
1
China
2
Denmark
2
Developing countries
10
Egypt
1
England
2
Europe
6
Europe, Central
2
Foreign countries
2
Fort Recovery
1
France
13
Freiburg im Breisgau
1
Germany
8
Germany (East)
1
Ghana
1
Great Britain
87
Greene County
1
Greene County (Miss.)
1
Hungary
9
India
4
Ireland
5
Italy
8
Japan
3
Kenya
1
Latin America
5
Mexico
7
Mississippi
1
Netherlands
1
New Zealand
4
Nicaragua
1
Norway
4
Ohio
1
Osaka (Japan)
2
Palestine
1
Poland
2
Russia
2
Scotland
3
more ...