Spectral Atlas for Amateur Astronomers : A Guide to the Spectra of Astronomical Objects and Terrestrial Light Sources
Richard Walker
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The Photographic Atlas of the Stars
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The Photographic Atlas of the Stars
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Spectral Atlas for Amateur Astronomers : A Guide to the Spectra of Astronomical Objects and Terrestrial Light Sources
Richard Walker
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Format: eBook (PDF)
Spectral Atlas for Amateur Astronomers : A Guide to the Spectra of Astronomical Objects and Terrestrial Light Sources
Richard Walker
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