1
Serial
2
Published in: Statističeski godišnik na bălgarskite dăržavni želěznici i pristanišča
1939(1941)
Book
3
Published: [Hannover] : Helge Lindau, 2007
Video
4
5
Published: Sofija, 1941-1941
Journal
6
7
Published: Berlin : Salzgeber, 2016
Video
8
9
Published: Stara Zagora : Litera print AD, 2014
Book
10
11
Book
12
Book
13
14
15
16
Book
17
Book
18
Published: [Sofia] : Militärverl, [1982?]
Book
19
Published: Berlin ; München [u.a.] : Langenscheidt, 2005
Book
20
Published: Sofija : Kožucharov, 1929.
Book