Geographic Subject
Soviet Union
47
Russia (Federation)
8
India
5
Developing countries
2
Poland
2
Russian Far East
2
Russian Far East (Russia)
2
Georgia (Republic)
1
Hungary
1
Kansk-Achinsk Basin
1
Kansk-Achinsk Basin (Russia)
1
Katowice (Poland : Voivodeship)
1
Katowice (Voivodeship)
1
Kazakhstan
1
Komi (Russia)
1
Latvia
1
Malaysia
1
Papua New Guinea
1
Russia, Northern
1
Siberia (Russia)
1
Siberia, Eastern (Russia)
1