Britta Steffen
Britta Steffen (; born 16 November 1983) is a German former competitive swimmer who specialized in freestyle sprint events, winning 2 gold medals at the 2008 Beijing Olympics. Provided by Wikipedia|
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by Steffen, Britta, Hahn, Andreas, Hilgner, Miriam, Behringer, Michael
Published 2017
Published 2017
Springer Berlin Heidelberg