Geographic Subject
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Siberia, Eastern
7
Soviet Union, Northwestern
7
Suriname
7
Jawa Tengah
6
Kenya
6
Ladoga Lake
6
New Zealand
6
Sri Lanka
6
Taymyr Peninsula
6
Ukraine
6
United States
6
Alaska
5
Argentina
5
Caspian Sea
5
Caucasus
5
Gobi Desert (Mongolia and China)
5
Japan
5
Lithuania
5
Norway
5
Primorskiĭ kraĭ
5
Russia, Northwestern
5
Russian Far East (Russia)
5
Sikhote-Alinʹ Range
5
Spain
5
Volga River Region
5
Africa, East
4
Arctic Ocean
4
Asia, Southeastern
4
Baikal, Lake, Region (Russia)
4
Baikal, Lake, Watershed
4
Bashkortostan
4
Developing countries
4
Europe, Eastern
4
Finland
4
Greenland
4
Italy
4
Latvia
4
Mexico
4
Pushchino (Moscow)
4
Sakhalin
4
Senegal
4
Siberia, Northeastern
4
Singapore
4
South Africa
4
Tanzania
4
Turkmenistan
4
Tuva
4
Waddenzee
4
Africa
3
Alps
3
more ...