Region
United States
651
Great Britain
119
Australia
9
China
8
Japan
8
England
6
Mexico
6
Canada
5
Tennessee
5
Africa
4
California
4
Europe
4
Michigan
4
Solar system
4
Soviet Union
4
Texas
4
Asia
3
Greece
3
Hiroshima-shi
3
India
3
Iraq
3
Manitoba
3
New York
3
New York (State)
3
North America
3
Rome
3
Study and teaching (Elementary)
3
West (U.S.)
3
Babylonia
2
Ciudad Juárez
2
Detroit
2
El Paso
2
France
2
Iowa
2
Missouri
2
Pennsylvania
2
Riceville
2
Russia
2
Scotland
2
Whitwell
2
Whitwell (Tenn.)
2
États-Unis
2
Aids and devices
1
Alaska
1
Antarctica
1
Arctic regions
1
Books and reading
1
Central America
1
Denmark
1
EE.UU
1
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