Correspondence with Edgar Fahs Smith, 1925.
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L.E. Knott Apparatus Company
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Boston, MA. From the description of Apparatus and methods for practical use of x-rays. 3rd ed., 1896. (College of Physicians of Philadelphia). WorldCat record id: 122347563 ...
Newell, Lyman C. (Lyman Churchill), 1867-1933
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