01006nam a2200193Ia 4500 CTU_16664 210402s9999 xx 000 0 und d 639 F533/N341 Ramon Bonfil FAO fisheries technical paper N.341: Overview of world elasmobranch fisheries Ramon Bonfil, FAO Rome FAO 1994 Twenty six countries have major elasmobranch fisheries on the basis that their present or recent catches of sharks and rays exceed 10,000t/yr. Information on species, gears, patterns, of exploitation, research and management of elasmobranchs is summarized for each of these countries. The general problems in appraising and managing elasmobranch fisheries and the need for conservation are discussed and possible solutions for some of these problems are proposed. fisheries Nguyễn Quang Điền, 970530 Trung tâm Học liệu Trường Đại học Cần Thơ