Geographic Subject
Africa
2
Africa, Eastern
2
Africa, Southern
1
Andhra Pradesh
1
Asia, Southeastern
2
Baltic Sea Region
1
Bangladesh
1
Buffalo
17
Buffalo (N.Y.)
1
California
2
Chicago
4
Chicago (Ill.)
7
Developing countries
1
Egypt
1
England
3
Europe, Central
7
Ganges River Valley (India and Bangladesh)
1
Germany
1
Great Lakes
1
Illinois
4
Inde
2
India
26
Japan
1
Kerala
1
London
3
Massachusetts
1
Minnesota
1
Mississippi River
1
Nashville
1
Nepal
1
New York
2
New York (N.Y.)
1
New York (State)
20
Pakistan
1
Russia (Federation)
1
Russian Far East
1
San Diego
1
San Diego (Calif.)
1
Sault Sainte Marie Canal (Mich.)
1
South Asia
1
Sri Lanka
2
Sunda Shelf
1
Switzerland
1
Tanzania
1
Tennessee
1
United States
7