Books

1. The Enigma of Sunspots: A Story of Discovery and Scientific Revolution
   

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2. Illustrated Dictionary of Practical Astronomy
   

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3. Spectral Evolution of Galaxies (Astrophysics and Space Science Library)
   

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4. Resolute and Undertaking Characters: The Lives of Wilhelm and Otto Struve (Astrophysics and Space Science Library)
   

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5. Astronomical Centers of the World
   

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Books