00486    a2200169   4500020001500000082001600015100001900031245003300050250000700083260005600090300002000146440005400166650003600220650001700256700001900273700002400292  a9251037795  a627.54bRIT  aRitzema, H.P.   aDrainage of irrigated lands   a    aRomebFood And Agriculture Organizationc1996g1996  aviii,74p.c30cm  aIrrigation water management: training manual No.9  aPLANT INJURIES, DISEASES, PESTS  aANIMAL PESTS  aKselik, R.A.L.  aChanduvi, Fernando