. . . Spectra of M supergiant stars
By: by Lyman Spitzer, jr. . . .
Series: Contributions from the Mount Wilson Observatory ;; no. 619.
Published: 1939
Place of publication: [Chicago
Language: eng
Number of pages: 47
Subjects: Stars -- Spectra
Other titles: Supergiant stars.
Notes: At head of title: Carnegie institution of Washington.
Issued also as thesis (Ph. D.) Princeton university, 1938.
"Reprinted from the Astrophysical journal, vol. 90, 1939."