Geographic Subject
Africa
4
Africa, Sub-Saharan
6
Altai Mountains Region
1
Amur River Valley (China and Russia)
1
Arab countries
1
Arkhangelʹska︠i︡a oblastʹ (Russia)
1
Asia
4
Asia, Central
8
Asia, Southeastern
3
Australia
1
Azerbaijan
2
Bali Island (Indonesia)
1
Balkan Peninsula
2
Baltic Provinces (Russia)
1
Belgorod (Russia)
1
Black Sea Lowland
1
Black Sea Lowland (Ukraine)
1
Bur︠i︡ati︠i︡a
2
Bur︠i︡ati︠i︡a (Russia)
5
Caucasus
1
China
5
Chuvashia
1
Communist countries
2
Dagestan
1
Dagestan (Russia)
1
Developing countries
2
East Asia
2
Egypt
3
England
1
Europe
1
Europe, Eastern
3
France
1
Greece
1
Guatemala
1
India
9
Indonesia
1
Iran
1
Irkutska︠i︡a oblastʹ (Russia)
1
Japan
3
Java
1
Kalmyki︠i︡a
1
Kalmyki︠i︡a (Russia)
1
Kaluga (Kaluzhska︠i︡a oblastʹ, Russia)
1
Karelia
1
Karelia (Russia)
1
Kazakhstan
3
Kievan Rus
1
Komi
1
Komi (Russia)
1
Kurska︠i︡a oblastʹ
1
more ...