Geographic Subject
Alaska
1
Argentina
1
Arizona
1
Asia
2
Asia, Southeastern
2
Australia
11
Bangladesh
2
Bolivia
9
Bulgaria
4
Central America
1
China
2
Colombia
10
Costa Rica
8
Cuba
1
El Salvador
3
France
1
Germany
3
Great Britain
1
Guatemala
1
Honduras
1
India
37
Indochina
4
Indonesia
8
Iowa
1
Italy
1
Malaysia
1
Middle East
1
Mongolia
5
Nepal
1
New Southwest
1
North Carolina
3
Oceania
1
Ohio
1
Orlovska︠i︡a oblastʹ
1
Pacific Area
1
Pakistan
8
Portugal
1
Russia (Federation)
2
South Asia
1
Southeast Asia
4
Southwest, New
1
Soviet Union
7
Sri Lanka
1
Suède
2
Sweden
2
Switzerland
4
Taiwan
1
Thailand
4
United States
20
Virginia
1
more ...