Dee ihe na-aga n'ihu maka paragraf a - Tjeerd Boersma (22 February 1915 <unk> 3 June 1985) bụ onye na-agba ọsọ ọsọ Dutch. Ọ gbara asọmpi n'asọmpi ụmụ nwoke 4 × 100 mita
n'egwuregwu Olimpik nke afọ 1936.