The proper motions of 1418 stars in and near the clusters h and [chi] Persei ...
Publisher: J. Van Boekhoven
Published: 1911
Place of publication: Utrecht
Language: eng; dut
Number of pages: 99
Subjects: Stars -- Proper motion.
Notes: Proefschrift--Utrecht.
Issued also as Recherches astronomiques de l'Observatoire d'Utrecht. V. 1911.