Dee ihe na-aga n'ihu maka paragraf a - Johanna "Jopie" Katarina Selbach (27 Julaị 1918 <unk> 30 Eprel 1998) bụ onye na-egwu mmiri n'efu si Netherlands. O nwetara ihe nrite ọlaedo na 1934 European Aquatics Championships
(ya na Willy den Ouden, Rie Mastenbroek na Ans Timmermans) na 1936 Summer Olympics (ya na den Ouden, Mastenbroek na Tini Wagner) na ụmụ nwanyị 4 × 100 m freestyle relay.