=LDR 22 4500 =001 2807 =082 04$a1999 KEL =100 1\$aKelly, Niamh =245 10$aImportance of aerial deposition as a source of phosphorous in Irish lakes =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1999 =650 \0$aTheses =852 \\$bFreeman Library$h1999 KEL