Research on the recurrence of sunspot groups during a rotation period of 27.25 days
By: by N. Doğan.
Series: Communications de la Faculté des sciences de l'Université d'Ankara ; v. 24 : Série A3, Astronomie
Publisher: Faculté des sciences de l'Université d'Ankara
Published: 1975
Place of publication: Ankara
Language: eng
Subjects: Sunspots.
Notes: Bibliography: p. 7-8.
Summary in Turkish.