00511nam a2200181Ia 4500020001500000082001900015245005200034260003400086690000600120700000500126500000500131100002400136300002400160952010100184964001700285921001000302999001700312  a0258969385  a338.1bR612.AE  aAgricultural Economics; principles and policyb  aLondonbCrosby Lockwoodc1977  a   a  a  aRitson, Christopher  axiii, 409p., index.  00104070aISIbISId1978-02-22l0o338.1 R612.AEpDP13236r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a23635  c23635d23635