Title: Atlas diagramm t︠s︡vet-svetimostʹ rassei︠a︡nnykh zvezdnykh skopleniĭ.  Dopolnenie pervoe = Atlas of colour-magnitude diagrams for open clusters : The first addition
First published: 1961
Subjects: Stars, Color, Clusters, Atlases, Magnitudes
LC classification: QB851 B373