Combining Texts

You have chosen 'A Puzzle about Belief' by Saul A. Kripke, 'Nominalism and Realism' by David M. Armstrong and 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz

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