Subject Region
Soviet Union
4
Southern States
3
Buenos Aires (Argentina)
2
Germany
2
Arab countries
1
Arizona
1
Canada
1
Cheju Island (Korea)
1
Chile
1
England
1
Israel
1
Korea
1
Manitoba
1
New Mexico
1
New Orleans (La.)
1
Pennsylvania
1
Poland
1
Russia (Federation)
1
Scotland
1
Siberia
1
Solway Firth Region (England and Scotland)
1
United States
1