Geographic Subject
Africa
Great Britain
173
France
171
Asia
134
Portugal
97
Congo (Democratic Republic)
83
Germany
80
Afrique
69
South Africa
63
Italy
62
Belgium
51
Africa, West
44
Africa, East
37
Europe
35
Africa, North
34
Africa, Central
33
Angola
31
German East Africa
28
Nigeria
28
Soviet Union
28
United States
28
Developing countries
26
Ethiopia
25
Algeria
23
Spain
23
India
21
Africa, French-speaking Equatorial
20
Madagascar
20
Morocco
20
Mozambique
20
Egypt
19
Sudan
19
Middle East
18
Africa, Sub-Saharan
17
Sahara
17
Africa, French-speaking West
16
Grande-Bretagne
14
Rhodesia and Nyasaland
14
Ghana
13
Libya
13
Tunisia
13
Kenya
12
Niger River
12
Senegal
12
Tanzania
12
Africa, Southern
11
Paris (France)
11
Cameroon
10
China
10
Guinea
10
more ...