Combining Texts

You have chosen 'Real Natures and Familiar Objects' by Crawford L. Elder, 'Two treatises' by Kenelm Digby and 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz

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All the ideas for Natural Reality, or select a subheading:
      A. Classical Physics
      B. Modern Physics
      C. Space
      D. Time
      E. Cosmology
      F. Chemistry
      G. Biology