00459nam a2200181 a 450000100080000000500110000800800410001910000180006024500400007826000580011830000100017665000160018665000140020265000160021665300080023270000170024070000200025715895741992-08-20       1976    bl uuuu      00u1 u    #d1 aWEBBER, G. D.  aFarming systems in South Australia.  aBowden: Department of Agriculture and Fisheriesc1976  a102p.  aagriculture  aAustralia  aAgricultura  aSul1 aCOCKS, P. S.1 aJEFFRIES, B. C.