Spectral types of faint stars in Kapteyn's selected areas 1-115
By: by Milton L. Humason ...
Series: Contributions from the Mount Wilson Observatory.; no. 458
Published: 1932
Place of publication: [Chicago
Language: eng
Number of pages: 51
Subjects: Stars -- Spectra.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal, vol. LXXVI, 1932."