Sŭvremennoto sŭstoi︠a︡nie na podvodnoto di︠e︡lo
By: Iv. Variklechkovʺ
Series: Voenna biblioteka -- no. 63
Publisher: Pechatnit︠s︡a na Armeĭskii︠a︡ voenno-izdatelski fond
Published: 1930
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 115
Subjects: Submarine warfare
Other titles: Sŭvremennoto sŭstoi︠a︡nie na podvodnoto delo