Volzhskai︠a︡ Bulgarii︠a︡
Subtitle: ocherki istorii srednevekovoĭ diplomatiĭ (X - pervai︠a︡ tretʹ  XIII vv.)
By: Igorʹ Anatolʹevich Gagin.
Publisher: Ri︠a︡zanskiĭ oblastnoĭ institut razvitii︠a︡ obrazovanii︠a︡, Spb. gos. un-t
Published: 2004
Place of publication: Ri︠a︡zanʹ
Language: rus
Number of pages: 234