00431nam a22001697a 4500003000400000008004100004020001500045082001700060100001800077245003900095260004300134300001100177650001600188650001700204650002100221700001900242OSt220613b        |||||||| |||| 00| 0 eng d  a8170961297  a338.1 bH46A  aHeady, Earl O  aAgricultural production functions   aNew Delhi:bKalyani Publishers, c1988  a667 p.  a Economics   aAgriculture   aEconomic aspects  aDillon, John L