Ámbito geográfico
UNITED STATES
73
ESPAÑA
41
LATIN AMERICA
32
AMÉRICA LATINA
19
AFRICA
11
GREAT BRITAIN
11
ARGENTINA
10
CHINA
8
MIDDLE EAST
7
ASIA
6
EUROPE, EASTERN
6
FILIPINAS
6
CANADA
5
DEVELOPING COUNTRIES
5
EAST ASIA
5
EUROPE
5
GREECE
5
SOUTHERN STATES
5
HONG KONG (CHINA)
4
PERÚ
4
ÉTATS-UNIS
4
AMERICA
3
FRANCE
3
OCEANIA
3
PORTUGAL
3
ROME
3
SOVIET UNION
3
VIRGINIA
3
AMÉRIQUE LATINE
2
BRASIL
2
CARIBBEAN AREA
2
EURASIA
2
IRELAND
2
ISRAEL
2
JAPAN
2
MEXICO
2
MÉXICO
2
NORTH CAROLINA
2
RUSSIA (FEDERATION)
2
SOUTH AMERICA
2
TAIWAN
2
URUGUAY
2
AFRICA, EASTERN
1
AFRICA, NORTH
1
AFRICA, NORTHEAST
1
AFRICA, SOUTHERN
1
AFRICA, SUB-SAHARAN
1
AFRIQUE
1
AFRIQUE ORIENTALE
1
AMÉRICA
1
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