David de Groen

Australia

Joined: 18/03/2011

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David de Groen's PowerPoint Presentations

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Recent Activity

bigsumo commented on Freedom's presentation "102years "

108 months ago

Comment (2)

bigsumo : May I have a copy of your powerpoint? Thank you for an interesting presentation. Especially the refereences to the early work of the fr..

108 months ago

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