01385oam 2200397Ia 450 991070104410332120111128152711.0(CKB)5470000002414597(OCoLC)679545504(OCoLC)655585920(EXLCZ)99547000000241459720101108d1980 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierThe mid-net zipper ridge a possible cause of unobserved porpoise mortality[electronic resource] /David B. HoltsLa Jolla, Calif. :U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Southwest Fisheries Center,[1980]1 online resource (3 pages) illustrationsNOAA-TM-NMFS-SWFC ;3Title from title screen (viewed on Nov. 28, 2011)."May 1980"--Cover.PorpoisesPurse seiningPorpoises.Purse seining.Holts D. B1398955Southwest Fisheries Center (U.S.)OCLCEOCLCEOCLCQGPOBOOK9910701044103321The mid-net zipper ridge a possible cause of unobserved porpoise mortality3484342UNINA