Geographic Subject
India
523
Soviet Union
219
Russia (Federation)
210
Indonesia
186
United States
186
Germany
161
California
101
Japan
96
China
86
Pakistan
68
France
67
Sweden
62
Bangladesh
61
Switzerland
53
Great Britain
47
Sri Lanka
38
Germany (West)
35
Russia
34
Siberia
30
Malaysia
29
Poland
26
Yugoslavia
26
Developing countries
24
Europe
21
Nepal
21
Punjab
19
Iowa
16
Kerala
16
Netherlands
16
Asia, Southeastern
15
Himachal Pradesh
15
Egypt
14
Massachusetts
14
Russia, Northern
14
Russian Far East
14
Thailand
14
Haryana
13
Karnataka
13
Asia
12
Bihar
12
Brazil
12
Iran
12
Ural Mountains Region
12
Canada
11
Gujarat
11
Hungary
11
Italy
11
Taiwan
11
Turkey
11
Africa
10
more ...