Geographic Subject
United States
401
Russia (Federation)
285
India
115
Germany
102
Soviet Union
75
Sweden
74
Great Britain
52
South Africa
50
France
49
Europe
41
Thailand
39
Japan
36
New York (State)
36
Netherlands
32
Ural Mountains Region
32
Switzerland
28
Russia, Northern
23
Russian Far East
22
Siberia
22
China
21
Indonesia
20
Illinois
19
Russia
19
Australia
18
Buffalo
18
Ukraine
18
Brazil
17
Germany (West)
16
Africa
15
Former Soviet republics
15
Kola Peninsula
14
Chicago (Ill.)
13
Canada
12
Finland
12
Rome
12
Greece
11
Sri Lanka
11
Middle East
10
New York
10
Siberia, Western
10
Turkey
10
California
9
Congo (Democratic Republic)
9
England
9
Inde
9
Italy
9
Massachusetts
9
New Zealand
9
North Carolina
9
Pakistan
9
more ...