00407nam a2200157Ia 4500008004100000020001500041082002000056100002100076245002700097260004600124300000800170650001400178650002000192653001600212653002100228170901s1977    xx            000 0 und d  a0879090200  a338.10973bG52A  aGoodwin, John W. 0aAgricultural Economics  aVirginiabReston Publishing Companyc1977  a372  aEconomics  aSocial sciences  aAgriculture  aEconomic aspects