=LDR 00000nam a2200000ui 4500 =001 1521 =008 250530s2006\\\\xx\|||||||||||||||||eng\d =082 04$a2006 MCC =100 1\$aMcCartney, Emma =245 10$aThe effects of reduced tillage on greenhouse gas enissions from a spring barley crop =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2006 =852 \\$bFreeman Library$cTheses$h2006 MCC