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“stillimage”, “printsandphotographs”, pp, nationallibraryofmedicine, nlm, imagesfromthehistoryofmedicine, ihm, historyofmedicinedivision, hmd, “nationalinstitutesofhealth”, nih, water, potable, suitablefordrinking, drinkableliquids, waders, stream, seine, trap, aquaticorganisms, sample, watersample, phssanitaryengineeringcenter, cincinnati, watertreatmentsystem, watersupply, sterilizingwater, drinkingbehaviorwater, sanitaryengineering, watersterilization, distill, microbiology, waterdistributionsystem, waterdistillationmechanisms, publicdomain, h20, archivesofmedicine, nlmdigitalcollection
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