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    Sigard Adolphus Knopf (November 27, 1857 – July 15, 1940) was a Kingdom of Prussia-born American physician. Born Siegmund Knopf on November 27, 1857,...
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  • Knopff, Canadian political scientist Sigard Adolphus Knopf (1857–1940), German-American physician [[Edwin GJ Knopf (1965-0000) Dutch,Austrian South African...
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    opened. The construction of the buildings was supervised by Dr. Sigard Adolphus Knopf. Efforts were made to confine the number of patients to those in...
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    American. 1914. p. 36. Retrieved December 3, 2022 – via Archive.org. Sigard Adolphus Knopf (1922). A History of the National Tuberculosis Association. pp. 402–405...
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    1016/S0366-0850(14)80023-9. Pittsburgh Sun-Telegraph. May 16, 1954. Knopf, Sigard Adolphus (1922). A History of the National Tuberculosis Association: The...
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    Fortnightly Notes, Volume 1 This article incorporates text from Sigard Adolphus Knopf's "A history of the National tuberculosis association: the anti-tuberculosis...
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  • and its clinical opportunities. Press of R.W. Hadley. pp. 43–44. Knopf, Sigard Adolphus (1922). A History of the National Tuberculosis Association: The...
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    ISBN 9780812213676. Retrieved April 21, 2022 – via Google Books. Knopf, Sigard Adolphus (1922). A History of the National Tuberculosis Association, The...
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