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Probable Motions in the Spiral Nebula Messier 51 (Canes Venatici) found with the Stereo-comparator. Preliminary Communication
Kostinsky, S.Volume:
77
Journal:
Monthly Notices of the Royal Astronomical Society
DOI:
10.1093/mnras/77.3.233
Date:
January, 1917
File:
PDF, 96 KB
1917