Revision history for entry Ghilardi, Silvio; Zawadowski, Marek (1995). "Undefinability of propositional quantifiers in the modal system S" [GHIUOP]

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2014-04-02T19:53:10updateSystem / admin update -
2013-12-01T20:46:29updateSystem / admin update -
2013-01-22T15:41:02updateSystem / admin update -
2009-12-08T11:05:08update