Region
19th century
1
Adelaide (S.A.)
1
Afghanistan
2
Africa
27
Africa, East
2
Africa, North
1
Africa, Southern
3
Africa, Sub-Saharan
11
Africa, Sub-Sahran
1
Africa, West
1
Afrika
1
Aids and devices
1
Aims and objectives
2
Alabama
6
Alaska
1
Albany
1
Alberta
1
Alexandria
1
Alfred
2
Algeria
1
Alsace-Lorraine
1
Ambon Island (Indonesia)
1
America
1
América Latina
1
Ann Arbor
1
Annapolis
2
Appalachian Region
1
Arab countries
7
Arabian Peninsula
1
Argentina
5
Arizona
7
Arkansas
2
Art
1
Asia
10
Asia Oriental
1
Asia, Central
1
Atlanta
3
Atlantic Coast
2
Atlantic Coast (Colombia)
2
Atlantic States
1
Australia
25
Austria
6
BRIC countries
4
Banda Islands (Indonesia)
1
Bangladesh
1
Barcelona
2
Bavaria
3
Bavaria (Germany)
1
Beijing
2
Belgium
1
more ...