Combining Texts

You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'What is Justified Belief?' by Alvin I. Goldman and 'Homeostasis, Species and Higher Taxa' by Richard Boyd

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All the ideas for Objects, or select a subheading:
      A. Existence of Objects
      B. Unity of Objects
      C. Structure of Objects
      D. Essence of Objects
      E. Objects over Time
      F. Identity among Objects