Columbia subject headings:
Harvard subject headings:
Environmental engineering--Russia (Federation)--Vologodskai︠a︡ oblastʹ--Congresses.
Geomorphology--Russia (Federation)--Vologodskai︠a︡ oblastʹ--Congresses.
Princeton subject headings:
Environmental engineering--Russia (Federation)--Vologodskai︠a︡ oblastʹ--Congresses.
Geomorphology--Russia (Federation)--Vologodskai︠a︡ oblastʹ--Congresses.