File:PARABOLOID TIME CAPSULES - A HELPFUL MESSAGE TO THE FUTURE - Copy (2).pdf: Revision history

26 December 2022

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14 November 2020

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21 July 2020

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2 July 2020

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6 May 2019

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• curprev 23:1423:14, 6 May 2019‎ Bart2 talk contribs‎ 95 bytes +95‎ Appropriate Technology Engineering Class Projects http://www.appropedia.org/Projects_with_Bart