Title: Izuchenie i sokhranenie ėkosistem nat︠s︡ionalʹnogo parka "Orlovskoe Polesʹe"
Subjects: Nature conservation
Places: Nat︠s︡ionalʹnyĭ park "Orlovskoe Polesʹe", Nat︠s︡ionalʹnyĭ park "Orlovskoe Polesʹe" (Russia), Russia (Federation)