00429nam a2200109Ia 450000500170000000800410001705000160005810000290007424501500010326000370025365000290029020251229175701.0251229s9999    xx            000 0 und d  aSB 211 .G38  aGathungu, Geofry Kingori 0aOptimization of seed potato tuber productivity and quality through intergrated water, nitrogen and phosphorus managementcGeofry Kingori Gathungu  aNjorob Egerton Universityc2014  aPotatoes --Biotechnology