Ámbito geográfico
UNITED STATES
327
LATIN AMERICA
168
DEVELOPING COUNTRIES
76
ESTADOS UNIDOS
71
ARGENTINA
55
AMÉRICA LATINA
50
CARIBBEAN AREA
26
AMÉRICA
21
MEXICO
18
AMERICA LATINA
17
CHINA
16
EUROPE
16
CHILE
15
WASHINGTON (D.C.)
15
BRAZIL
13
ASIA
12
AFRICA, SUB-SAHARAN
10
AMERICA
10
BRASIL
10
SOVIET UNION
10
EUROPE, EASTERN
9
GREAT BRITAIN
9
SOUTH AMERICA
9
AFRICA
8
EUROPA
8
INDIA
8
MIDDLE EAST
7
CARIBE (REGIÓN)
6
COLOMBIA
6
EAST ASIA
6
PAÍSES EN DESARROLLO
6
ALEMANIA
5
AMÉRICAS
5
BOLIVIA
5
JAPAN
5
RUSSIA (FEDERATION)
5
VENEZUELA
5
CARIBE
4
CENTRAL AMERICA
4
ECUADOR
4
EL SALVADOR
4
FORMER SOVIET REPUBLICS
4
GERMANY
4
HAITI
4
INDONESIA
4
NORTH AMERICA
4
PERU
4
PERÚ
4
AFRICA, NORTH
3
ASIA, CENTRAL
3
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