Razvitie i izpolzvane na nat︠s︡ionalnii︠a︡ kompleks "Dunav"
Subtitle: sŭstoi︠a︡nie, problemi, perspektivi
By: sŭstavitel i obshta nauchna redakt︠s︡ii︠a︡ Krŭsti︠u︡ Papazov
Edition: 1. izd.
Publisher: Kn-vo "Georgi Bakalov"
Published: 1981
Place of publication: Varna
Language: bul
Number of pages: 150
Subjects: Transportation; Navigation