Region
Venezuela
158
Investigación
157
Perú
46
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27
Chile
16
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16
Spain
13
Argentina
7
Australia
7
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4
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4
Australie
3
Canada
3
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3
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3
Romania
3
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2
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2
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2
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2
Publicación periódica
2
Albania
1
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1
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1
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1
Antarctica
1
Arab countries
1
Australasia
1
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1
Berkeley
1
California
1
China
1
Czech Republic
1
Developing countries
1
East Asia
1
Ecuador
1
Ethiopia
1
Georgia
1
Georgia (Republic)
1
Germany
1
Germany (West)
1
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1
Lithuania
1
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1
Pacific Area
1
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1
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1
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1
Stany Zjednoczone
1
Texas
1
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