00370nam a2200109Ia 4500008004100000082001100041245002800052260005000080300001000130600009000140650003000230130903s9999    xx            000 0 und d  a63  M9  aAlternative agriculture  aWashington, D.CbNational Academy Pressc1989  a448p.  aCommittee on the role of alternative farming methods in modern production agriculture  aAgriculture-United states