Title: Sbornik ot sŭi︠u︡zni dokumenti v pomosht na predsedateli︠a︡ na nauchno-tekhnicheskoto druzhestvo
Subjects: Nauchno-tekhnicheski sŭi︠u︡zi v Bŭlgarii︠a︡, Nauchno-tekhnicheski sŭi︠u︡zi v Bŭlgarii︠a︡. T︠S︡entralen sŭvet, History