00522nam a2200193Ia 4500 CTU_4107 210402s9999 xx 000 0 und d 639 F533/N.311 R Berka FAO fisheries technical paper N.311 Inland capture fisheries of the USSR R Berka Rome FAO 1990 fisheries Nguyễn Quang Điền, 960530 Trung tâm Học liệu Trường Đại học Cần Thơ