Title: Roli︠a︡ta i mi︠a︡stoto na deteto, uchenika i uchiteli︠a︡ v uchebno-vŭzpitatelnii︠a︡ prot︠s︡es pri uslovii︠a︡ta na nauchno-tekhnicheskata revoli︠u︡t︠s︡ii︠a︡
Subjects: Education, Congresses, Technical education, Bulgaria
Places: Bulgaria, Congresses