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2 résultats pour : lab workers 1910s

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Two lab workers peering through microscopes 1914-1920.
UMG22A03_353

Two lab workers peering through microscopes 1914-1...

U.S. Army Medical School - Workers in lab with Typhoid Vaccine circa 1917.
UMG21A21_139

U.S. Army Medical School - Workers in lab with Typ...