United States 276
Michigan 26
Great Britain 17
Middle East 11
Netherlands 11
Africa 9
Developing countries 8
France 8
Canada 7
Asia 6
Great Lakes (North America) 6
Illinois 6
Latin America 6
Soviet Union 6
China 5
Europe 5
Southern States 5
European Economic Community countries 4
Germany 4
North America 4
Arab countries 3
Great Lakes Region (North America) 3
Iowa 3
Ireland 3
New York (State) 3
Rome 3
Cyprus 2
East Asia 2
Former Soviet republics 2
Greece 2
Holland 2
Israel 2
Japan 2
Korea 2
Middle West 2
New England 2
Poland 2
Querétaro (Mexico : State) 2
Scandinavia 2
South Africa 2
Spain 2
West (U.S.) 2
Yugoslavia 2
Africa, Northeast 1
America 1
Arabian Peninsula 1
Argentina 1
Australia 1
Austria 1
Battle Creek (Mich.) 1
Benelux countries 1
Byzantine Empire 1
California 1
Caribbean Area 1
Central America 1
Chicago (Ill.) 1
Chicago Metropolitan Area (Ill.) 1
Colombia 1
Delaware 1
Detroit Metropolitan Area 1
England 1
Ethiopia 1
Europe, Central 1
Europe, Eastern 1
European Union countries 1
Evanston 1
Foreign countries 1
Fort Ticonderoga (N.Y.) 1
Georgia 1
Germany (East) 1
Germany (West) 1
Grand Rapids (Mich.) 1
Grand River Valley (Mich.) 1
Great Lakes Region 1
Great Lakes Watershed (North America) 1
Hamburg 1
Holland (Mich.) 1
India 1
Indiana 1
Iran 1
Islamic countries 1
Italy 1
Kalamazoo (Mich.) 1
Los Angeles 1
Mediterranean Region 1
Mexico 1
Minnesota 1
Muskegon (Mich.) 1
New York 1
New York (N.Y.) 1
Nigeria 1
Northern Ireland 1
Northwest, Old 1
Ohio 1
Oregon 1
Pacific States 1
Pennsylvania 1
Polar regions 1
Politique internationale 1
Querétaro (Mexico) 1