David Harker: October 19, 1906-February 27, 1991.
Hauptman
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D018360:Crystallography, X-Ray / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D009369:Neoplasms / Q000266:history*; D012952:Societies / Q000266:history; D014481:United States