Photometric researches
Subtitle: the eclipsing variables Y Camelopardalis SZ Herculis RS Vulpeculae R Canis majoris RY Aquarii
By: by Raymond Smith Dugan.
Series: Contributions from the Princeton University Observatory,; no. 6
Publisher: The Observatory
Published: 1924
Place of publication: Princeton, N.J
Language: eng
Number of pages: 66
Subjects: Variable stars.