A photographic study of variable stars forming a part of the Henry Draper memorial
By: prepared by Williamina P. Fleming ... under the direction of Edward C. Pickering ...
Series: Annals of the Astronomical Observatory of Harvard College.; vol. XLVII, pt. I
Publisher: The Observatory
Published: 1907
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 113
Subjects: Variable stars.