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==Document history==
==Document history==
Portions of the above article were adapted from the following sources under the [[GNU Free Documentation License]], under other applicable licenses, or by permission of the copyright holders.
* [http://www.getwiki.net/-Propositional_Calculus&oldid=1695 "Propositional calculus"], [http://www.getwiki.net/ GetWiki].
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revision as of 11:58, 29 Nov 2006 by Jon Awbrey
revision as of 11:58, 29 Nov 2006 by Jon Awbrey
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* Some content adapted from the [http://www.wikinfo.org/ Wikinfo] article [http://www.wikinfo.org/index.php?title=Propositional_calculus&oldid=28000 "Propositional calculus"] under the [[GNU Free Documentation License]].
* [http://www.wikinfo.org/index.php?title=Propositional_calculus&oldid=28000 "Propositional calculus"], [http://www.wikinfo.org/ Wikinfo].
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revision as of 18:34, 19 November 2006 by Jon Awbrey
revision as of 18:34, 19 November 2006 by Jon Awbrey
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* Some content adapted from the [http://en.wikipedia.org/ Wikipedia] article [http://en.wikipedia.org/w/index.php?title=Propositional_calculus&oldid=74069381 "Propositional calculus"] under the [[GNU Free Documentation License]].
* [http://en.wikipedia.org/w/index.php?title=Propositional_calculus&oldid=74069381 "Propositional calculus"], [http://en.wikipedia.org/ Wikipedia].
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revision as of 03:44, 6 September 2006 by Jon Awbrey
revision as of 03:44, 6 September 2006 by Jon Awbrey
