Geographic Subject
Soviet Union
Russia (Federation)
9
Arctic regions
1
Asia, Central
1
Asiatic Russia
1
Belarus
1
Caucasus, Northern
1
Egypt
1
Finland
1
Moldova
1
Mongolia
1
North Pacific Ocean
1
Ossetia
1
Pacific Ocean
1
Russie
1
Siberia
1
Siberia (Russia)
1
United States
1
Ural Mountains Region
1
Ural Mountains Region (Russia)
1
Étude et enseignement
1