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Night Shift in a Glass Factory

William H. Helfand, Jan Lazarus and Paul Theerman

William H. Helfand is a consultant based in New York, NY. Jan Lazarus and Paul Theerman are with the History of Medicine Division, National Library of Medicine, Bethesda, Md.



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  		Source. Prints and Photographs Collection, History of Medicine Division, National Library of Medicine.

 




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