Gnevno nebe
Subtitle: khronika na edin podvig : [letet͡s︡ŭt Nikolaĭ Filchev po vreme na Balkanskata voĭna]
By: Kosta Filipov.
Publisher: DVI
Published: 1975
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 183
Subjects: Filchev, Nikolaĭ.; Balkan Peninsula -- History -- War of 1912-1913 -- Aerial operations, Bulgarian.; Bulgaria -- History -- 1878-1944.