An atlas of stellar spectra, with an outline of spectral classification
W. W. Morgan, Philip C. Keenan (Author), Edith Kellman (Author)
Print Book, English, [1943]
The University of Chicago Press, Chicago, Ill., [1943]
catalogs (documents)
3 preliminary leaves, 35 pages 55 phot., diagrams 27 x 22 cm.
1806249
Text (24 cm.) and photographs issued together in portfolio