00482nam a2200181Ia 4500008004100000020001500041082001600056100001900072245006000091260003300151300000800184650001400192650002000206653001600226653002100242700001900263700001800282170901s1970    xx            000 0 und d  a0080155855  a338.1bC67R  aCowling, Keith 0aResource Structure of Agriculture: An Economic Analysis  aOxfordbPergamon Pressc1970  a248  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects  aMetcalf, David  aRayner, A. J.