=LDR 22 4500 =001 3812 =082 04$a2009 HAR =100 1\$aHarrison, Aoife =245 10$aNatural factors affecting elevated arsenic levels in groundwater in Ireland =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2009 =650 \0$aTheses =852 \\$bFreeman Library$h2009 HAR