In Russian. Leontev, Oleg Konstantinovich. General geomorphology. Moscow: Higher School, 1979 All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7625491
In Russian. Leontev, Oleg Konstantinovich. Canyons under the sea. Moscow: Thought, 1973. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7153117