Geographic Subject
Asia
Africa
55
Soviet Union
16
Developing countries
15
Africa, North
14
Middle East
9
Europe, Eastern
8
Europe
5
United States
5
Asia, Southeastern
4
Russia (Federation)
4
Arab countries
3
North America
3
Siberia (Russia)
3
Asia, Central
2
China
2
East Asia
2
Korea (North)
2
Mongolia
2
Orient
2
Pacific Area
2
Siberia
2
South Asia
2
Vietnam
2
America
1
Asie
1
Australasia
1
Australia
1
Bangladesh
1
Canada
1
Czechoslovakia
1
Earth
1
Former Soviet republics
1
India
1
Indonesia
1
Iran
1
Islamic countries
1
Japan
1
Laos
1
Latin America
1
Macedonia
1
North Pacific Ocean
1
Oceania
1
Omsk
1
Pacific Coast (Asia)
1
Pakistan
1
Portugal
1
Russia
1
Russian Far East
1
Russian Far East (Russia)
1