Source Information
Harriot, Thomas
,
HMC 241 II, Calculations from the observations of Hannelius, Warner, Copernicus, Tycho Brahe, on the vernal & autumnal equinoxes, the solstices, orbit of the earth, length of the year etc.
Digitized copy:
Petworth House Archives
Digitized by:
Max Planck Institute for the History of Science
Copyright:
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Petworth House Archives
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