Region
Africa
2
Alabama
2
America
2
Arkansas
1
Atlanta
1
Atlanta (Ga.)
4
California
3
Caribbean Area
1
China
1
Detroit
4
Detroit (Mich.)
3
Developing countries
1
Essex County
1
Georgia
2
Houston
1
Indiana
1
Indianapolis
1
Indianapolis (Ind.)
1
Little Rock
1
Little Rock (Ark.)
1
Los Angeles
1
Los Angeles (Calif.)
1
Louisiana
1
Michigan
4
Mississippi
1
Montgomery
1
Montgomery (Ala.)
1
New Jersey
1
Oakland
2
Ohio
1
Orange
1
Orange (N.J.)
1
Oregon
2
Pennsylvania
2
Philadelphia
2
Philadelphia (Pa.)
2
Portland
2
Richmond
3
Richmond (Va.)
3
Saint Kitts and Nevis
1
South Carolina
1
Southern States
14
Soviet Union
2
Tanzania
3
Texas
3
United States
96
Virginia
3