Region
United States
79
Europe
6
Great Britain
4
European Economic Community countries
2
Latin America
2
Russia
2
Africa
1
Asia, Southeastern
1
Brazil
1
California
1
Caribbean area
1
Central America
1
Europe, Eastern
1
European Community countries
1
France
1
Germany
1
Italy
1
Massachusetts
1
New Jersey
1
New York
1
New York (City)
1
New York (State)
1
North America
1
Pennsylvania
1
Soviet Union
1
Spain
1
Underdeveloped areas
1
Washington Metropolitan area
1
Washington metropolitan area
1
Washington, D.C
1