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bureauoflaborstatistics, healthmanpower, healthwomanpower, statistics, numericaldata, healthoccupations, unitedstates, photomechanicalprint, poster, usdeptoflabor, healthprofession, chart, dentistry, dentist, child, mouth, surgicalgown, surgicalmasks, healthserviceoccupations, stillimage, publicdomain, freeimages, printsandphotographs, pp, nationallibraryofmedicine, nlm, imagesfromthehistoryofmedicine, ihm, historyofmedicinedivision, hmd, nationalinstitutesofhealth, nih, archivesofmedicine, nlmdigitalcollection
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