=LDR 22 4500 =001 5360 =082 04$a1994 DOH =100 1\$aDoherty, Maria =245 10$aA study of polychlorinated biphenyls (PCBs) and their occurance in mackerel, Scomber scombrus L., off the west coast of Ireland =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1994 =650 \0$aTheses =852 \\$bFreeman Library$h1994 DOH