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Paul Birch papers on Orbital Ring Systems?
#3
Incidentally, if the Orbital Rings papers are out of order, that is exactly how we received them; but we could try to improve on that by creating a new PDF in the right order for the sake of historical conservation.
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RE: Paul Birch papers on Orbital Ring Systems? - by stevebowers - 03-27-2017, 03:47 AM

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