00522    a2200145   4500082001700000245007300017260006000090300002300150440002500173650005700198650004000255650003500295650001500330650003100345  a631.587bINT  aThe integrated management of major irrigation schemesban assessment  aColombobAgrarian Research and Training Instituteg1991  a[viii],183p.c21cm  aResearch study No.87  aSPECIFIC TECHNIQUES, APPARATUS, EQUIPMENT, MATERIALS  aOPERATIONS SUBSEQUENT TO HARVESTING  aSPECIAL METHODS OF CULTIVATION  aIRRIGATION  aCULTIVATION AND HARVESTING