Region
20th century
2
Africa
1
Africa --
1
Alexandria (Egypt) --
1
America --
1
American
1
Asia, Central
1
Asia, Southeastern
1
Asia, Southeastern --
2
Atlanta
1
Australia
2
Australia --
1
Beirut (Lebanon) --
1
Bellingham Region (Wahsington) --
1
Berkeley
1
Borneo
1
Bosnia and Hercegovina
1
Bosnia and Hercegovina --
1
Britain
1
California --
1
Canada
2
Cevennes Mountains Region
1
Cevennes Mountains Region (France) --
1
Charles County (Md.) --
1
Chechnia (Russia) --
1
China
8
China --
3
Chinese
1
Chinese --
1
Colorado
1
Cv̌ennes Mountains Region (France)
1
Developing countries
1
East Asia --
1
England
11
England --
3
Europe
5
Europe --
5
Europe, Eastern --
1
France
4
France --
7
Gaul --
1
Georgia --
1
Germany
3
Germany --
5
Great Britain
33
Great Britain --
13
Great Britain\xCase studies
1
GreatBritain
1
Greece
1
Greece --
2
more ...