Combining Texts

You have chosen 'Principles of Theoretical Logic' by Hilbert,D/Ackermann,W, 'Structuralism Reconsidered' by Fraser MacBride and 'works' by John Duns Scotus

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