00638 a2200181 4500020001500000082001700015100001900032245010700051260002600158300002000184440005100204650005700255650001800312650003500330650004000365650003100405700002000436 a9251036659 a631.582bINT aDudal, R eed. aIntergrated plant nutrition systemsbreport of an expert consultation Rome, Italy, 13-15 December 1993 aRomebFAOc1995g1995 avii,426p.c30cm aFAO fertilizer and plant nutrition bulletin 12 aSpecific techniques, apparatus, equipment, materials aCrop rotation aSpecial methods of cultivation aOperations subsequent to harvesting aCultivation and harvesting aRoy, R.N. eed.