• publisher: Wright & Potter printingco., state printers
  • creator: Harry Willard Clark
  • contributor: Harvard University
  • mediatype: texts
  • years: 1910
  • pages: 81
  • language: English
  • lccn: agr11000640
  • notes: Reprinted from the 41st annual report of the Massachusetts State board of health.
  • download: pdf file