Title: Pŭrva Nauchno-tekhnicheska konferent͡s︡ii͡a︡ s mezhdunarodno uchastie na tema "Opazvane na okolnata sreda ot zamursi͡a︡vane v raĭonite na deĭstvie na predprii͡a︡tii͡a︡ta ot t͡s︡vetnata metalurgii͡a︡"
Subjects: Congresses, Environmental aspects, Metallurgy, Nonferrous metals