Title: Dannye geofizicheskikh nabli︠u︡deniĭ Poli︠a︡rnoĭ geokosmofizicheskoĭ observatorii Tiksi, ii︠u︡lʹ-dekabrʹ 1977 goda
Subjects: Auroras, Ionosphere, Geomagnetism, Observations, Cosmic rays