Submitted on: 30 November 2012.
Revised on: 10 January 2013.
Accepted on: 04 February 2013.
Logic and Logical Philosophy
Submitted on: 19 August 1999.
Revised on: 03 September 1999.
Accepted on: 21 September 1999.
Logic and Logical Philosophy---NICOLAUS COPERNICUS UNIV TORUN
Submitted on: 14 September 2004.
Revised on: 23 October 2004.
Accepted on: 14 November 2004.
Logic and Logical Philosophy
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Submitted on: 03 June 2006.
Revised on: 20 June 2006.
Accepted on: 16 July 2006.
Logic and Logical Philosophy