Combining Texts

You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'On the Algebra of Logic' by Charles Sanders Peirce and 'The Logic of Scientific Discovery' by Karl Popper

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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