00281    a2200109   4500082001300000100001700013245005400030250001200084260004100096300001800137650001600155  a633bKIP  aKipps, M. S.  aProduction of field cropsba textbook of agronomy  a6th ed.  aBombaybTata McGraw-Hillc1970g1970  ax,790p.c23cm  aField crops