Region
United States
142
Great Britain
124
Europe
35
European Union countries
24
England
15
Developing countries
14
Canada
9
Australia
8
Japan
8
Africa
7
China
7
Germany
5
Soviet Union
5
California
4
France
4
India
4
Scandinavia
4
North America
3
Asia
2
East Asia
2
European Economic Community countries
2
Germany (West)
2
Ireland
2
Italy
2
London
2
Malawi
2
Mexico
2
Netherlands
2
Polar regions
2
Research
2
Russia (Federation)
2
Saudi Arabia
2
Scotland
2
Southeast Asia
2
Africa, Eastern
1
Alabama
1
Alpine regions
1
Antarctica
1
Arctic regions
1
Area 51 (Nev.)
1
Asie du Nord-Est
1
Australasia
1
Australie
1
Austria
1
Baltic Sea Region
1
Batley, W. Yorkshire
1
Brazil
1
Cambridge
1
Cambridge (Cambridgeshire)
1
Caribbean Area
1
more ...