Combining Texts

You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Tarski on Truth and Logical Consequence' by John Etchemendy and 'Reference and Definite Descriptions' by Keith Donnellan

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All the ideas for Existence, or select a subheading:
      A. Nature of Existence
      B. Change in Existence
      C. Structure of Existence
      D. Theories of Reality
      E. Categories