Submitted on: 23 January 2012.
Revised on: 27 February 2012.
Accepted on: 18 March 2012.
Review of Symbolic Logic---CAMBRIDGE UNIV PRESS
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Submitted on: 16 October 1998.
Revised on: 13 November 1998.
Accepted on: 19 November 1998.
Review of Symbolic Logic---CAMBRIDGE UNIV PRESS