Harriot, Thomas - Harriot papers, vol. 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. [HMC 241 II]

Harriot, Thomas, Harriot papers, vol. 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. [HMC 241 II]