TY CONF TI ORGANIZING OF MONITORING OF THE GULF OF FINLAND COASTAL ZONE WITHIN SAINT-PETERSBURG KW monitoring JO XXIV International Coastal Conference "SEA COASTS – EVOLUTION, ECOLOGY, ECONOMY" AU Fillipov, N.B. AU Spiridonov, M.. AU Gerasimov, A.V. AU Ryabchuk, D.V. PY 2020 PB Academus Publishing