Region
Cuba
313
Venezuela
160
Investigación
157
Mexico
116
México
107
Perú
38
Spain
34
Latin America
33
United States
26
Chile
24
Brazil
22
Colombia
21
España
17
América Latina
10
États-Unis
9
Australia
7
Turkey
7
Argentina
6
Canada
6
Poland
6
Great Britain
5
India
4
Pakistan
4
Australie
3
California
3
Europe
3
Grande-Bretagne
3
Publicación periódica
3
Romania
3
Amérique latine
2
Australasia
2
Austria
2
CHILE
2
Costa Rica
2
Croatia
2
Czech Republic
2
Earth (Planet)
2
Ecuador
2
Germany
2
LA
2
Lithuania
2
New Zealand
2
Peru
2
USA
2
Africa
1
Albania
1
Algeria
1
Allemagne
1
Allemagne RF
1
América central
1
more ...