The solar activity in the year 1966.
Series: Osservatorio astronomico di Trieste,; 363; Osservatorio astronomico di Trieste (Series) ;; 363.
Publisher: Tipografia Baccini & Chiappi
Published: 1968
Place of publication: Firenze
Language: eng
Number of pages: 16
Subjects: Solar activity.
Notes: Bibliography: p. 16.
"Estratto dalle Memorie della Società astronomica italiana, vol. XXXIX, fasc. 1, 1968."
Summary in Italian and English.