00409nam a2200133 a 450000100080000000500110000800800410001910000180006024500810007826000670015930000110022670000170023770000210025418198051998-05-07       1976    bl uuuu      00u1 u    #d1 aWEBBER, G. D.  aFarming systems in South Australiabdry land farming in a semi-arid climate.  aSouth Australia: Department of Agriculture and Fisheriesc1976  a104 p.1 aCOCKS, P. R.1 aJEFFERIES, B. C.