Combining Texts

You have chosen 'The Problem of Empty Names' by Marga Reimer, 'The Foundations of Empirical Knowledge' by A.J. Ayer and 'An Axiomatization of Set Theory' by John von Neumann

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All the ideas for Social Practice, or select a subheading:
      A. Freedoms
      B. Equalities
      C. Rights
      D. Justice
      E. Policies
      F. Life Issues