Sur le groupe des étoiles a hélium dans la constellation d'Orion
By: par Östen Bergstrand
Series: Nova acta Regiae Societatis Scientiarum Upsaliensis -- ser. 4, v. 5, no. 2; Acta Universitatis Upsaliensis. Nova acta Regiae Societatis Scientiarum Upsaliensis -- ser. IV, v. 5, no. 2
Publisher: Edv. Berling Boktryckeri
Published: 1919
Place of publication: Upsala
Language: swe
Number of pages: 37
Subjects: B stars; Motion in line of sight; Observations
Notes: Includes bibliographical references.