Revision history for entry Heck, Richard (1993). "The development of arithmetic in Frege's Grundgesetze der Arithmetik" [RICTDO]

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2015-02-05T02:14:24updateSystem / admin update -
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2013-11-04T04:25:32updateSystem / admin update -
2011-03-09T01:47:34updateSystem / admin update -
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