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Berlin, A., Schaller, K.H., Grimes, H. et al. Environmental exposure to lead: Analytical and epidemiological investigations using the European standardised method for blood delta-aminolevulinic acid dehydratase activity determination. Int. Arch Occup Environ Heath 39, 135–141 (1977). https://doi.org/10.1007/BF00405658
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DOI: https://doi.org/10.1007/BF00405658