Geographic Subject
India
475
Soviet Union
208
Russia (Federation)
200
Indonesia
162
Germany
158
United States
147
Japan
85
China
84
France
66
Sweden
62
Pakistan
59
Bangladesh
53
Switzerland
53
Great Britain
47
Sri Lanka
36
Germany (West)
33
Russia
30
Siberia
29
Malaysia
25
Developing countries
24
Yugoslavia
24
Poland
22
Europe
21
Nepal
18
Netherlands
16
Asia, Southeastern
15
Himachal Pradesh
15
Punjab
15
Egypt
14
Kerala
14
Massachusetts
14
Russia, Northern
14
Karnataka
13
Russian Far East
13
Asia
12
Iran
12
Thailand
12
Bihar
11
Italy
11
Taiwan
11
Turkey
11
Ural Mountains Region
11
Africa
10
Canada
10
Germany (East)
10
Hungary
10
Vietnam
10
Haryana
9
Kenya
9
Madhya Pradesh
9
more ...