Ámbito geográfico
LATIN AMERICA
25
UNITED STATES
16
ARGENTINA
9
DEVELOPING COUNTRIES
8
EUROPE
3
EUROPEAN UNION COUNTRIES
3
BRAZIL
2
GREAT BRITAIN
2
PERU
2
SOUTH AMERICA
2
SOVIET UNION
2
ANDES REGION
1
ARGENTINAU
1
CARIBBEAN AREA
1
CHILE
1
COLOMBIA
1
CUBA
1
EUROPEAN ECONOMIC COMMUNITY COUNTRIES
1
MEXICO
1
NORTH ATLANTIC REGION
1
SOUTHERN CONE OF SOUTH AMERICA
1
SPAIN
1
VENEZUELA
1