Kamennite shtitove
By: Boris Cholpanov.
Series: V sveta na voennata tekhnika
Publisher: Voen. izd-vo
Published: 1989
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 293
Subjects: Fortification -- Bulgaria -- History.; Castles -- Bulgaria -- History.
Notes: Includes bibliographical references (p. 286-290).