Combining Texts

You have chosen 'Reference and Reflexivity' by John Perry, 'works' by Richard Price and 'Dispositional Essentialism and the Laws of Nature' by Barbara Vetter

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All the ideas for Modality, or select a subheading:
      A. Necessity
      B. Possibility
      C. Sources of Modality
      D. Knowledge of Modality
      E. Possible worlds