Bŭlgarska tvŭrdina
Subtitle: Kŭrdzhaliĭski okrŭg v 13-vekovnata istorii͡a︡ na Bŭlgarii͡a︡ : preporŭchitelen bibliografski ukazatel
By: [sŭstavitel Ivanka Koleva].
Publisher: Okrŭzhna biblioteka
Published: 1981
Place of publication: Kŭrdzhali
Language: bul
Number of pages: 29
Subjects: Kŭrdzhaliĭski okrŭg (Bulgaria) -- History -- Bibliography.
Notes: Includes index.