Geographic Subject
Soviet Union
148
Russia (Federation)
91
Mongolia
35
Siberia
27
Asia, Central
19
Earth
19
Former Soviet republics
13
Russian Far East
11
Europe, Eastern
10
Kazakhstan
8
Asia
7
Russia
7
Siberia (Russia)
7
Siberia, Western
7
Balkan Peninsula
6
Byzantine Empire
6
Finland
6
Europe
5
Siberia, Eastern
5
United States
5
Africa
4
Caucasus
4
Caucasus, Northern (Russia)
4
Developing countries
4
Khangai Mountains
4
USSR
4
Arab countries
3
Belarus
3
Caucasus, Northern
3
Communist countries
3
Gobi Desert (Mongolia and China)
3
India
3
Japan
3
Middle East
3
Poland
3
Saint Petersburg (Russia)
3
Slavic countries
3
URSS
3
Asia, Southeastern
2
Cuba
2
Don River Region (Russia)
2
Europe, Central
2
Europe, Northern
2
Georgia (Republic)
2
Orient
2
Pacific Area
2
Sakha
2
Sakha (Russia)
2
Siberia, Northeastern
2
Soviet Union, Northwestern
2
more ...