Some comparisons of spectral classifications.
Subtitle: Discussions of color index and spectral type.  Effective wave lengths of standard magnitudes; color temperature and spectral type.
By: By Frederick H. Seares and Mary C. Joyner.
Contributors: Joyner, Mary C. b. 1889, joint author.
Series: Contributions from the Mount Wilson Observatory,; no. 683-685
Published: 1943
Place of publication: [Chicago
Language: eng
Number of pages: 41
Subjects: Stars -- Classification.
Notes: Bibliographical footnotes.
Cover title.
At head of title: Carnegie Institution of Washington.
Pages also numbered 379-467.
"Reprinted from the Astrophysical journal, vol. 98, 1943"