Geographic Subject
Soviet Union
Asia
43
Asia, Central
29
East Asia
11
Middle East
9
Russia (Federation)
7
Africa
6
South Asia
6
Asia, Southeastern
4
Great Britain
4
Russia
4
Afghanistan
3
China
3
India
3
Japan
3
Pacific Area
3
United States
3
Communist countries
1
Developing countries
1
Europe
1
Greece
1
Iran
1
Orient
1
Persian Gulf Region
1
Rome
1
Siberia, Eastern
1
Southeast Asia
1
Tajikistan
1
Volga River Region
1