Title: Mezhdunaroden knigoobmen na Bŭlgarskata akademii͡a na naukite
Subjects: Bibliography, Bŭlgarska akademii︠a︡ na naukite, Bŭlgarska akademii︠a︡ na naukite. T︠S︡entralna biblioteka, Catalogs, Literary and scientific Exchanges, Periodicals, Science, Exchange of publications