TY JOUR TI SELECTIVITY ESTIMATION BASED ON FISHERIES MANAGEMENT USING BEACH SEINES KW fishing selectivity KW fisheries management KW beach seine KW commercial volume of fish KW allowable catching of fish of non-commercial size JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Kostrykin, D.. AU Grebenshchikov, Y.. AU Melnikov, A.. PY 2013 IS 2013 PB Astrakhan State Technical University