Heat 5 | Team | time | Rk. | 1. Petra Thümer | GDR | 4:17.20 | 6. | 2. Rosemary Milgate | AUS | 4:21.20 | 13. | 3. Jenny Turrall | AUS | 4:21.33 | 14. | 4. Allison Calder | NZL | 4:23.64 | 15. | 5. Eleonora Pandini | ITA | 4:34.69 | 24. | 6. Myriam Mizouni | TUN | 4:43.11 | 28. | 7. Georgina Osorio | PAN | 4:49.80 | 32. |
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Heat 4 | Team | time | Rk. | 1. Shirley Babashoff | USA | 4:16.07 | 2. | 2. Shannon Smith | CAN | 4:16.70 | 3. | 3. Sabine Kahle | GDR | 4:19.34 | 8. | 4. Irina Vlasova | URS | 4:21.19 | 12. | 5. Rachaniw Bulakul | THA | 4:32.98 | 22. | 6. Susan Edmondson | GBR | 4:33.33 | 23. | 7. Diana Hatler | PUR | 4:49.73 | 31. |
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