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Amateur Telescope Making: Book One
  • DJVU
  • English
  • Year: 1967
  • Author: Albert G. Ingalls, Dr. Harlow Shapley
On the Relative Velocity of Blue and Yellow Light
  • PDF
  • English
  • Year: 1923
  • Author: Harlow Shapley
Note on the Problem of Great Stellar Distances
  • PDF
  • English
  • Year: 1922
  • Author: Harlow Shapley
Light and Color Variations of Nova Aquilae 1918.4
  • PDF
  • English
  • Year: 1923
  • Author: Harlow Shapley
Amateur Telescope Making
  • PDF
  • English
  • Year: 1966
  • Author: Albert G. Ingalls (ed.)
Galaxies
  • PDF
  • English
  • Year: 1972
  • Author: Harlow Shapley; Paul W. Hodge
Amateur Telescope Making Advanced (Book Three)
  • PDF
  • English
  • Year: 1938
  • Author: Ingalls, Albert C.
A Treasury of Science
  • PDF
  • English
  • Year: 1963
  • Author: Harlow Shapley, Samuel Rapport, Helen Wright