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      Scientific American April 1950

      On the Generalized Theory of Gravitation

      An account of the newly published extension of the general theory of relativity against its historical and philosophical background

      • By Albert Einstein on April 1, 1950

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      More in the April 1950 issue of Scientific American
      • Books
      • The Hydrogen Bomb: II
      • Letters to the Editos, April 1950
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