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Quiz question for solar observers
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12-07-2020, 05:46 PM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
https://digitalcollections.nypl.org/...0-e00a18064a99
This should work.
I actually have a copy of Father Secchi’s book....I can scan the illustrations if needed.
Merlin66
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