By Onyango Christine   Marchant John   Grundy Andrea   Phelps Kath   Reader Richard   in Precision Agriculture

ISSN:1385-2256|6|2|183-192

Springer Publishing Company ‎(2005)‎

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By Muoki Penina   Makokha Anselimo   Onyango Christine   Ojijo Nelson   in Ecology of Food and Nutrition

ISSN:0367-0244|48|6|482-498

Routledge Ltd‎(2009)‎

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