Title: Regionalʹnai︠a︡ ėkologicheskai︠a︡ situat︠s︡ii︠a︡
Subjects: Congresses, Environmental conditions, Environmental protection
Places: Leningradskai︠a︡ oblastʹ, Leningradskai︠a︡ oblastʹ (Russia), Russia (Federation), Saint Petersburg, Saint Petersburg (Russia)