TY JOUR TI IMPROVING THE TECHNOLOGY AND MANAGEMENT OF FAR EASTERN SARDINE (IWASHI) AND MACKEREL TRAWL FISHING KW trawl systems KW fishing management KW sardine KW mackerel KW optimization JO Fisheries AU Boytsov, A.N. AU Lisienko, S.V. AU Osipov, E.V. AU Valkov, V.E. AU Ivanko, N.S. AU Brown, J.S. AU Pilipchuk, D.A. AU Shevchenko, A.I. PY 2020 IS 2020 PB FSBI "TSUREN"