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photomechanicalprint, posters, “stillimage”, “printsandphotographs”, pp, nationallibraryofmedicine, nlm, imagesfromthehistoryofmedicine, ihm, historyofmedicinedivision, hmd, “nationalinstitutesofhealth”, nih, water, potable, suitablefordrinking, drinkableliquids, watertreatmentsystem, watersupply, drinkingbehaviorwater, microbiology, militarypersonnel, unitedstates, poster, solider, cup, stream, skull, bluestream, poisonouswater, sterilizingwater, sanitaryengineering, watersterilization, distill, waterdistributionsystem, waterdistillationmechanisms, publicdomain, h20, archivesofmedicine, nlmdigitalcollection
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