=LDR 22 4500 =001 1210 =082 04$a1990 MAC =100 1\$aMacMahon, Colum =245 10$aThe distribution of Senecio erucifolius (L.) in Ireland =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c1990 =650 \0$aDissertations =852 \\$bStaff Coffee Room$h1990 MAC