What is malaria? : and why is it most intense in hot climates? an enquiry into the nature and cause of the so-called marsh poison with remarks on the principles to be observed for the preservation of health in tropical climates and malarious districts / by C.F. Oldham.

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Credit: What is malaria? : and why is it most intense in hot climates? an enquiry into the nature and cause of the so-called marsh poison with remarks on the principles to be observed for the preservation of health in tropical climates and malarious districts / by C.F. Oldham. Source: Wellcome Collection.