Title: Bŭlgaro-ruski i bŭlgaro-sŭvetski vrŭzki i otnoshenii︠a︡, osŭshtestvi︠a︡vani chrez Varna i Varnenskii︠a︡ kraĭ
Subjects: Sources, Relations
Places: Varna (Bulgaria : Oblast), Varna (Oblast), Soviet Union, Bulgaria