Combining Texts

You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'Two Notions of Being: Entity and Essence' by E.J. Lowe and 'Open Society and Its Enemies:Hegel and Marx' by Karl Popper

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All the ideas for Science, or select a subheading:
      A. Basis of Science
      B. Scientific Theories
      C. Induction
      D. Explanation