=LDR 00000nam a2200000ui 4500 =001 920 =008 250530s2000\\\\xx\|||||||||||||||||eng\d =082 04$a2000 HIG =100 1\$aHiggins, Mary =245 10$aA comparison of the nutrient budgets of a conventional and an organic farming system in Co. Westmeath =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2000 =852 \\$bFreeman Library$cTheses$h2000 HIG