Subject Region
China
9
United States
9
Poland
5
Germany
3
Norway
3
Spain
3
Sweden
3
Canada
2
England
2
Estonia
2
France
2
Great Britain
2
Hungary
2
Lisbon (Portugal)
2
New Zealand
2
Russia
2
Yellow River (China)
2
America
1
Australia
1
Austria
1
Azerbaijan
1
Brazil
1
Egypt
1
Grand Canyon (Ariz.)
1
Guernica (Spain)
1
Iran
1
Ireland
1
Mexico
1
Pacific Area
1
Romania
1
Scandinavia
1
Southwest, New
1
Southwest, Old
1
Taiwan
1
Turkey
1
Ukraine
1