Region
United States
50
Great Britain
16
Asia
9
India
9
Europe
7
Australia
5
Canada
4
Developing countries
4
South Asia
4
Africa
3
Pacific Area
3
Australasia
2
China
2
Chine
2
Denmark
1
Europe, Eastern
1
European Union countries
1
Inde
1
Islands of the Pacific
1
Italy
1
North America
1
Periodicals
1
Scandinavia
1
Singapore
1
Southeast Asia
1
West (U.S.)
1