Sunspot observations for the year 1975
By: by N. Doğan.
Series: Communications de la Faculté des sciences de l' Université d'Ankara ; t. 25, 3 : Série A3, Astronomie
Publisher: Faculté des sciences de l'Université d'Ankara
Published: 1977
Place of publication: Ankara
Language: eng
Number of pages: 54
Subjects: Sunspots -- Observations.
Notes: Summary in Turkish.