Region
1988-
1
2000-
1
Afghanistan
7
Afirca
1
Africa
194
Africa, Central
3
Africa, East
2
Africa, Eastern
1
Africa, French-speaking
2
Africa, French-speaking West
1
Africa, North
13
Africa, Southern
5
Africa, Sub-Saharan
57
Africa, West
5
Afrika
1
Akron
2
Akron (Ohio)
2
Alabama
1
Alaska
3
Albania
5
Alberta
4
Aleppo (Syria)
2
Algeria
8
Allegheny County
1
Allegheny County (Pa.)
1
Almaguin Highlands
1
Almaguin Highlands (Ont.)
1
Amazon River Region
3
Amazon River Valley
2
America
30
Angola
1
Antigua and Barbuda
1
Appalachian Region
5
Arab countries
27
Arabian Peninsula
1
Arctic regions
1
Area de Conservación Arenal (Costa Rica)
1
Argentina
46
Armenia
3
Armenia (Republic)
4
Asia
141
Asia, Central
12
Asie
1
Aswan High Dam (Egypt)
1
Athens
1
Athens (Greece)
1
Atlantic Coast
1
Australia
50
Australia, Northern
1
Australie
1
more ...