Revision history for entry Friedrich, J├╝rgen (1996). "Design science 97" [JRGDS]

NB: for privacy reasons, few details are provided in public revision histories.
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2014-04-01T07:56:29updateSystem / admin update -
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2013-11-20T19:16:56updateSystem / admin update -
2013-01-24T15:45:09updateSystem / admin update -
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2011-09-13T14:34:33update
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2010-09-30T11:08:06updateSystem / admin update -
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