Revision history for entry Prior, Arthur N. (1949). "Categoricals and hypotheticals in George Boole and his successors" [PRICAH]

NB: for privacy reasons, few details are provided in public revision histories.
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2015-02-04T17:50:37updateSystem / admin update -
2013-12-01T03:23:45updateSystem / admin update -
2012-08-27T19:33:34updateSystem / admin update -
2011-10-18T23:44:10updateSystem / admin update -
2010-09-09T11:43:06updateSystem / admin update -