The field of 61 Cygni
Subtitle: A study of Yerkes observatory parallax photographs
By: by Mary Murray Hopkins...
Series: Contributions from the Observatory of Columbia university - ;; no. 29
Published: 1915
Place of publication: New York
Language: eng
Number of pages: 45
Subjects: Parallax -- Stars.
Notes: Thesis (PH. D.) - Columbia university, 1915.
Vita.
"References for table VII" : p. 43-45.