00412    a2200157   4500020001500000082001900015100002400034245004000058250001200098260004800110300002300158650001600181650001600197650002100213650002000234  a0424001314  a633.00994bPRI  aPratley, J.E. eed.  aPrinciples of field crop production  a2nd ed.  aSydneybSydney University Pressc1980g1988  ax,463p.billc33cm  aField crops  aAgriculture  aPlantation crops  aCrop Production