Nutrient balances at farm level in Machakos (Kenya), using a participatory nutrient monitoring (NUTMON) approach von Gachimbi, L.N., Keulen, H.van, Thuranira, E.G., Karuku, A.M., Jager, A.de, Nguluu, S., Ikombo, B.M., Kinama, J.M., Itabari, J.K., Nandwa, S.M.

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