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D (Stack)Halley, Edmund
"An Extract of an account given by Mr. Flamstead of his own and Mr. Edmund Halleys Observations concerning the Spots in the Sun, appearing in July and August 1676"
In a volume of various papers, extracted from Philosophical Transactions of the Royal Society, 1676 onwards. Spine title: "Halley's Astronom Tracts". Formerly the property of the Radcliffe Observatory.
[Unknown]
1676