Title: I︠U︡bileen sbornik "110 godini Federat︠s︡ii︠a︡ na nauchno-tekhnicheskite sŭi︠u︡zi
Subjects: Science, Engineering, Federat︠s︡ii︠a︡ na nauchno-tekhnicheskite sŭi︠u︡zi (Bulgaria), Societies
Places: Bulgaria