Region
United States
684
Europe
2
Great Britain
2
Japan
2
Southern States
2
Standing Rock Indian Reservation (N.D. and S.D.)
2
Tzintzuntzan (Mexico)
2
Asia
1
China
1
Cincinnati
1
Denver Region (Colo.)
1
Florida
1
Illinois
1
India
1
Mexico
1
Ohio
1
Rocky Mountains Region
1
Saint Kitts and Nevis
1
South Africa
1
Soviet Union
1
Technology and civilization
1
Washington (D.C.)
1
États-Unis
1