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Investigations representing the departments. Astronomy and astrophysics .. (1903)

University of Chicago · Chicago : The University of Chicago Press · leaf 404

An illustration from Investigations representing the departments. Astronomy and astrophysics .., 1903, leaf 404 — Fig. 1. Red End of the Spectrum of 152 SciuKLLum 00 -iSIKl … ,FiG. 2. Bright Lines in the Spectrcm of 152 Schjf.llehi

Astronomy

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