Final | time | 1. Julia Sanchez Deze | Peru | 12.2s | 2. Jean Patton | United States | 12.3s | 3. Lilian Heinz | Argentina | 12.7s | 4. Janet Moreau | United States | 12.7s | 5. Adriana Millard Pacheco | Chile | 12.8s | 6. Olga Bianchi | Argentina | 12.9s |
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Semi 1 | time | 1. Julia Sanchez Deze | Peru | 12.5s | 2. Adriana Millard Pacheco | Chile | 12.8s | 3. Olga Bianchi | Argentina | 12.9s | 4. Dolores Dwyer | United States | 12.9s | 5. Beatriz Kretschmer de Buccicardi | Chile | 13.0s | 6. Deyse Jurdelina de Castro | Brazil | 13.1s |
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Semi 2 | time | 1. Jean Patton | United States | 12.6s | 2. Lilian Heinz | Argentina | 12.9s | 3. Janet Moreau | United States | 13.2s | 4. Elisabeth Clara Muller | Brazil | 13.2s | 5. Helena Cardoso de Menezes | Brazil | 13.2s | 6. Ana Maria Fontán | Argentina | 13.2s |
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Heat 1 | time | 1. Adriana Millard Pacheco | Chile | 12.7s | 2. Dolores Dwyer | United States | 12.8s | 3. Olga Bianchi | Argentina | 13.0s | 4. Graviola Ewing | Guatemala | 13.5s | 5. Carmen Matos Garcia | Ecuador | |
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Heat 2 | time | 1. Julia Sánchez Deze | Peru | 12.6s | 2. Beatriz Kretschmer de Buccicardi | Chile | 12.8s | 3. Deyse Jurdelina de Castro | Brazil | 13.1s | 4. Esther Villalón | Mexico | 13.5s | 5. Leonor Estevez Bucheli | Ecuador | |
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Heat 3 | time | 1. Jean Patton | United States | 12.6s | 2. Lilian Heinz | Argentina | 12.9s | 3. Elisabeth Clara Muller | Brazil | 13.3s | 4. Alejandrina Correa | Colombia | 13.4s | 5. Aida Mawyn Cedeno | Ecuador | |
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Heat 4 | time | 1. Janet Moreau | United States | 12.8s | 2. Helena Cardoso de Menezes | Brazil | 13.0s | 3. Ana Maria Fontán | Argentina | 13.1s | 4. Cecilia Navarrete | Colombia | 13.3s | 5. Eliana Gaete Lazo | Chile | |
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