Revision history for entry Schwerin, A. (1983). "Some comments on the begriffsschrift and natural language" [ASCSCO]

NB: for privacy reasons, few details are provided in public revision histories.
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2013-12-01T21:10:06updateSystem / admin update -
2011-10-18T02:51:18updateSystem / admin update -
2010-10-01T17:39:37updateSystem / admin update -
2010-09-23T17:02:49addSystem / admin update -