}, A., M., O., ,., D., J., {., E., A.(1991).Casarett & Doull Toxicology the Basic Science of Poisons : Fourt Edition (Fourth Edition).New York:Pergoman Prees.
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}, A., M., O., ,., D., J., {., E., A..Casarett & Doull Toxicology the Basic Science of Poisons : Fourt Edition.Fourth EditionNew York:Pergoman Prees,1991.Text.