Geographic Subject
Turkey
13
Japan
4
Soviet Union
4
China
3
Germany
3
United States
3
Austria
2
France
2
Great Britain
2
Italy
2
Navigation
2
Poland
2
Switzerland
2
Yugoslavia
2
Asia
1
Caroline Islands
1
Colombia
1
Colombia, 1886
1
Corée
1
Cyprus
1
Developing countries
1
Estonia
1
Finland
1
Germany (West)
1
Greece
1
India
1
Ireland
1
Italy, 1886
1
Korea
1
Morocco
1
Nepal
1
Netherlands
1
Northern Ireland
1
Norway
1
Palau
1
Prussia
1
Prussia (Germany)
1
Russia
1
Schwarzburg-Sondershausen
1
Schwarzburg-Sondershausen (Germany)
1
Serbia
1
Spain
1
Spain and the United States, 1886
1
Sweden
1
United States and Spain, 1886
1