Nkhani Zamakampani

  • Mbiri ya chitukuko cha stethoscope

    Zonse zimachokera ku machubu a mapepala.Stethoscope yamakono: Zaka 200 za mbiriyakale.Stethoscope yoyamba padziko lapansi idabadwa mu 1816, pomwe dotolo waku France Rene Laennec adasefa mawu kuchokera pachifuwa cha wodwala kupita kukhutu kudzera pa chubu chachitali cha pepala.Ndendende momwe Laennec adapangira ...
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