The spectrum of H.D. 50138
By: by Paul W. Merrill ...
Series: Contributions from the Mount Wilson Observatory.; no. 423
Published: 1931
Place of publication: [Chicago
Language: eng
Number of pages: 16
Subjects: Double stars.; Stars -- Spectra.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal, vol. LXXIII, 1931."