He finished 13th in the men 's 10,000 metres event and was eliminated in the heats of the men 's 5000 metres .
Karl Bertil Karlsson ( 19 September 1919 -- 31 December 2012 ) was a Swedish athlete who competed at the 1952 Summer Olympics in Helsinki .
Karl Bertil Karlsson finished 13th in the men 's 10,000 metres event and was eliminated in the heats of the men 's 5000 metres .
Karl Bertil Karlsson ( 19 September 1919 -- 31 December 2012 ) was a Swedish athlete who competed at the 1952 Summer Olympics in Helsinki .