The Annie J. Cannon memorial volume of the Henry Draper extension [Charts]
By: by Annie J. Cannon and Margaret Walton Mayall.
Contributors: Mayall, Margaret W.
Series: Annals of the Astronomical Observatory of Harvard College, v. 112
Publisher: The Observatory
Published: 1949
Place of publication: Cambridge
Language: eng
Number of pages: 295
Subjects: Stars -- Spectra
Other titles: The Draper extension (Charts)