Third report on the progress of the Plan of selected areas
Subtitle: together with some remarks concerning future investigations of the plan
By: by P. J. Van Rhijn.
Publisher: Hoitsema Brothers
Published: 1923
Place of publication: Groningen
Language: eng
Number of pages: 96
Subjects: Kapteyn, J. C. 1851-1922.; Stars -- Observations.
Notes: Includes bibliographical references.