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• Grand Rapids Schoolchildren Giving Saliva Samples As Part of Their City's Water Fluoridation Project

  • Uploaded by: National Library of Medicine
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  • Date uploaded: 2024-09-19
  • Tags: photoprint, grandrapids, schoolchildren, salivasamples, waterfluoridationproject, classroom, children, bottle, stillimage, publicdomain, freeimages, printsandphotographs, nationallibraryofmedicine, nlm, ihm, nationalinstitutesofhealth, nih, archivesofmedicine, nlmdigitalcollection
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