1
Serial
2
Published in: Statističeski godišnik na bălgarskite dăržavni želěznici i pristanišča
1939(1941)
Book
3
4
5
Published: Sofija, 1941-1941
Journal
6
7
Published: Berlin : Salzgeber, 2016
Video
8
9
10
11
Book
12
Published: Stara Zagora : Litera print AD, 2014
Book
13
14
Book
15
Book
16
17
18
19
Published: Bonn : Bundesministerium für Vertriebene, [1950]
Book
20
Book