=LDR            22        4500
=001  920
=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
=650  \0$aTheses
=852  \\$bFreeman Library$h2000 HIG