Gretta Kok
.jpg) Gretta Kok in 1966 |
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| Medal record | ||
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| Women's swimming | ||
Representing the  Netherlands
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| European Championships | ||
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1966 Utrecht | 4×100 m medley |
Margretta "Gretta" Kok (born 16 October 1944 in Amsterdam) is a retired Dutch breaststroke swimmer who participated in the 1960 and 1964 Summer Olympics. In 1960, she was fifths in the 200m breaststroke event, whereas in 1964 she did not reach the final. In 1966, she won a gold medal in the 4 × 100 m medley relay at the European Aquatics Championships. Her younger sister, Ada Kok, was also an Olympic swimmer and part of the same team that won the medley gold in 1966.
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