Combining Texts

You have chosen 'The Evolution of Logic' by William D. Hart, 'Lectures on the Philosophy of Right' by Georg W.F.Hegel and 'Reference and Definite Descriptions' by Keith Donnellan

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