Final | time | ____________________ | 1. | United States | 48.7s | | Dolores Dwyer,Janet Moreau, Nell Jackson,Jean Patton | 2. | Chile | 49.3s | | Eliana Gaete Lazo,Beatriz Kretschmer de Buccicardi, Hildegard Kreft,Adriana Millard Pacheco | 3. | Argentina | 49.8s | | Ana Maria Fontán,Olga Bianchi, Teresa Carvajal, Lilian Heinz. res: Cora Pascasio, Oldemia Bargiela de Martin | 4. | Brazil | 50.5s | | Helena Cardoso de Menezes,Deyse Jurdelina de Castro, Wanda dos Santos, Elisabeth Clara Muller | 5. | Ecuador | 53.3s | | Carmen Matos Garcia,Leonor Estévez Bucheli, Aida Mawyn Cedeno, Jacinta Sandiford |
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