00486nam a2200109Ia 450000500170000000800410001705000190005810000270007724501860010426000370029065000490032720251229172133.0251229s9999    xx            000 0 und d  aSB 269 .K46M35  aMaina, Stephen Wambugu 0aSystem design and scalability of farmer field schools and rainforest alliance certification of smallholder tea producers East and West of Kenya's Rift Valley.cStephen Wambugu Maina  aNjorob Egerton Universityc2013  aFarmers Field Schools--Tea Production--Kenya