Columbia subject headings:
Harvard subject headings:
Conservation of natural resources--Russia (Federation)--Primorskiĭ kraĭ.
Ecology--Russia (Federation)--Primorskiĭ kraĭ.
Environmental protection--Russia (Federation)--Primorskiĭ kraĭ.
Princeton subject headings:
Conservation of natural resources--Russia (Federation)--Primorskiĭ kraĭ.
Ecology--Russia (Federation)--Primorskiĭ kraĭ.
Environmental protection--Russia (Federation)--Primorskiĭ kraĭ.