TY CONF TI LEGAL ENVIRONMENTAL ASPECTS OF DREDGING IN RUSSIA ON THE EXAMPLE OF MARINE MERCHANT UST-LUGA PORT KW Ust-luga port JO XXIV International Coastal Conference "SEA COASTS – EVOLUTION, ECOLOGY, ECONOMY" AU Mamaeva, M.A. AU Pisarevskaya, N.S. PY 2024 PB Academus Publishing