Revision history for entry Lejewski, Czesław (1961). "On prosleptic syllogisms" [CZEOPS]

NB: for privacy reasons, few details are provided in public revision histories.
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2013-12-01T14:29:21updateSystem / admin update -
2013-11-22T08:33:11updateSystem / admin update -
2013-11-22T08:33:09updateSystem / admin update -
2010-10-28T08:41:55updateSystem / admin update -
2010-10-01T14:40:54updateSystem / admin update -
2010-09-23T12:05:15addSystem / admin update -