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    • Lead reduction of petrol and flood lead concentrations of athletes. 

      Grobler, S.R.; Maresky, L.S.; Kotze, T.J.v.W. (Archives of Environmental Health, 1992)
      In 1984, it was determined that the blood of long-distance runners in South Africa contained unacceptably high concentrations of lead. Subsequently, the petrol lead level in South Africa was reduced from 0.8 g/l to 0.4 ...