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| | First 3 from each Semi advanced to Final. |
| Semi 1 | | time | | | 1. Lia Khitrina |  Soviet Union | 8.3s | Q | | 2. Teresa Nowak |  Poland | 8.5s | Q | | 3. Mieke Sterk |  Netherlands | 8.5s | Q | | 4. Mary Peters |  Great Britain | 8.7s | | | 5. Valeria Bufanu |  Romania | 8.9s | | | -. Heide Rosendahl |  West Germany | DNS | |
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| Semi 2 | | time | | | 1. Karin Balzer |  East Germany | 8.3s (?) | Q | | 2. Teresa Sukniewicz | Poland | 8.5s | Q | | 3. Ivanka Koshnicharska |  Bulgaria | 8.7s | Q | | 4. Milena Piačková |  Czechoslovakia | 8.7s | | | 5. Meta Antenen |  Switzerland | 8.7s | | | 6. Christa Knöppel |  Austria | 9.2s | |
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| 6. Ivanka Koshnicharska | Bulgaria | 8.6s | | | Heat 1 | | time | | | 1. Karin Balzer | East Germany | 8.3s | Q | | 2. Mary Peters | Great Britain | 8.5s | Q | | 3. Meta Antenen | Switzerland | 8.5s | Q | | 4. Ivanka Koshnicharska | Bulgaria | 8.7s | Q | | 5. Emina Pilav |  Yugoslavia | 8.7s | |
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| 4. Teresa Nowak | Poland | 8.5s | | | Heat 2 | | time | | | 1. Lia Khitrina | Soviet Union | 8.2s | Q | | 2. Mieke Sterk | Netherlands | 8.5s | Q | | 3. Teresa Nowak | Poland | 8.5s | Q | | 4. Milena Piačková | Czechoslovakia | 8.6s | Q | | 5. Katalin Balogh |  Hungary | 8.7s | |
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| 5. Mieke Sterk | Netherlands | 8.6s | | | Heat 3 | | time | | | 1. Teresa Sukniewicz | Poland | 8.6s | Q | | 2. Heide Rosendahl | West Germany | 8.6s | Q | | 3. Valeria Bufanu | Romania | 9.2s | Q | | 4. Christa Knöppel | Austria | 9.3s | Q |
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