Geographic Subject
Russia (Federation)
Caucasus, Northern
8
Siberia
6
Soviet Union
6
Volga River Valley
3
Central Chernozem Region
2
Moscow (Oblast)
2
Orlovskai︠a︡ oblastʹ
2
Russian Far East
2
Cheli︠a︡binskai︠a︡ oblastʹ
1
Dagestan
1
Extreme-Orient sovietique
1
Krasnodarskiĭ kraĭ
1
Non-Chernozem Region
1
Russie
1
Siberie
1
Tambovskai︠a︡ oblastʹ
1
Volga-Ural Region
1
Voronezhskai︠a︡ oblastʹ
1