Title: Prosvetno delo v Ustovo
Subjects: Osnovno uchilishte "Stoi︠u︡ Shishkov" (Smoli︠a︡n, Bulgaria), Education, Congresses, History
Places: Smoli︠a︡n (Bulgaria), Smoli︠a︡n, Ustovo (Smoli︠a︡n, Bulgaria), Bulgaria