00663nam a2200205Ia 4500020001800000020001500018040000800033082002600041100002800067245006500095260007600160300004400236490003500280650002400315650002500339650002100364650002000385700002600405700002600431  a9789251058763  a9251058768  cOSU  a639 FOO 2007 A050 Or.1 aValdemarsen, John Willy10aOptions to mitigate bottom habitat impact of dragged gears /  aRome :bFood and Agriculture Organization of the United Nations,cc2007  axii, 29 p. :bill. (some ill.) ;c25 cm1 aFAO fisheries technical paper, 0aTrawls and trawling 0aDredging (Fisheries) 0aAquatic habitats 0aAquatic ecology1 aJ��rgensen, Terje1 aEng���as, Arill