00723nam a2200169 a 450000100080000000500110000800800410001910000180006024500810007826000580015930000100021752002580022765000140048565000160049970000170051570000210053213217202008-02-14       1976    bl uuuu      00u1 u    #d1 aWEBBER, G. D.  aFarming systems in south Australia; dry land farming in a semi-arid climate.  a[S.l.]: Department of Agriculture and fisheriesc1976  a103p.  aFarming systems in South Australia. The cereal zone, the ley farming systems. The pastoral zone the low intensity grazing system. Facilities and services supporting south australian agriculture. South australiana technology available to other countries.  aAustralia  aAgricultura1 aCOCKS, P. S.1 aJEFFERIES, B. C.