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ספרים בחינם

An Investigation into the Nature of Black Phthisis or Ulceration Induced by Carbonaceous Accumulation in the Lungs of Coal Miners

Archibald Makellar · 2007

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Miners' phthisisLungs -- Dust diseasesCoal miners -- DiseasesMiners -- DiseasesOccupational diseases