Combining Texts

You have chosen 'Letters to Schlick' by Rudolph Carnap, 'The Methods of Ethics (7th edn)' by Henry Sidgwick and 'A Slim Book about Narrow Content' by Gabriel M.A. Segal

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All the ideas for Formal Logic, or select a subheading:
      A. Syllogistic Logic
      B. Propositional Logic PL
      C. Predicate Calculus PC
      D. Modal Logic ML
      E. Nonclassical Logics
      F. Set Theory ST
      G. Formal Mereology