Region
Europe
141
Latin America
101
United States
95
Asia
86
Japan
85
Canada
59
Southeast Asia
42
France
35
Taiwan
34
Australia
30
Caribbean Area
30
Germany
25
Italy
25
Pacific Area
25
Austria
24
Arab countries
22
Germany (West)
22
Europe, Eastern
20
Brazil
19
Developing countries
19
Middle East
19
Great Britain
18
Soviet Union
18
Poland
17
Eastern Europe
15
Africa
14
Asia, Southeastern
14
China
14
Mediterranean Region
13
East Asia
10
Indochina
9
Indonesia
9
European Economic Community countries
8
Korea (South)
8
Germany (East)
7
Hungary
7
Italy, Southern
7
Korea
7
Argentina
6
New Zealand
6
Central America
5
Netherlands
5
Switzerland
5
Congresses
4
Foreign countries
4
India
4
North America
4
South Asia
4
Southern Italy
4
1945-
3
more ...