Geography
United States
947 results
Soviet Union
182 results
Developing countries
161 results
China
143 results
Latin America
106 results
Middle East
73 results
Europe
67 results
Europe, Eastern
66 results
Japan
58 results
Mexico
51 results
Israel
45 results
Africa
41 results
Asia
38 results
India
36 results
Germany
33 results
Russia (Federation)
30 results
Central America
26 results
France
26 results
Former Soviet republics
23 results
Great Britain
23 results
Iran
23 results
Southeast Asia
23 results
Brazil
22 results
Caribbean Area
22 results
Germany (West)
22 results
Cuba
20 results
Arab countries
19 results
European Economic Community countries
18 results
South Africa
18 results
Taiwan
18 results
Korea (South)
17 results
Nicaragua
17 results
Canada
16 results
East Asia
16 results
Italy
16 results
Pacific Area
16 results
Poland
16 results
Yugoslavia
15 results
Tropics
14 results
Vietnam
14 results
Egypt
13 results
Guatemala
13 results
Pakistan
13 results
Communist countries
12 results
Peru
12 results
Spain
12 results
Argentina
11 results
Chile
11 results
Germany (East)
11 results
Iraq
11 results
more…