"Klaus Heinrich Thomas Mann (18 November 1906 – 21 May 1949) was a German-born American writer and dissident. He was the son of Thomas Mann, a nephew of Heinrich Mann and brother of Erika Mann, with whom he maintained a lifelong close relationship, and Golo Mann. He is well known for his 1936 novel, Mephisto." - (en.wikipedia.org 12.08.2021)
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