Region
United States
60
France
6
Africa
4
Germany
4
Latin America
4
China
3
Developing countries
3
Hong Kong
3
New York
2
New York (N.Y.)
2
New York (State)
2
Bibliography
1
Brazil
1
Central America
1
Chicago (Ill.)
1
Cuba
1
Hong Kong (China)
1
Indiana
1
Italy
1
Middle West
1
Panama Canal (Panama)
1
Paraguay
1
Peru
1