Region
Alaska
1
Albany
1
Canada
2
Central America
1
Connecticut
1
Delaware
3
Developing countries
3
Europe
2
France
4
France, Northern
1
Germany
4
Great Britain
19
Greece
6
Israel
2
Italy
8
Massachusetts
3
Middle West
1
New York (State)
1
Pennsylvania
4
Philadelphia
1
Philosophy
1
Political science
1
Québec (Province)
2
Reagan, Ronald
1
Rome
2
Soviet Union
1
USA
1
United States
549
Waltham
2
États-Unis
2