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Manure management practices and policies in sub-Saharan Africa: Implications on manure quality as a fertilizer por Ndambi, O.A., Pelster, David E., Owino, Joseph, Buisonjé, F. de, Vellinga, Theun V.

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Manure management in the (sub-)tropics; Training manual for extension workers por Teenstra, E., Buisonjé, F. de, Ndambi, A., Pelster, David E.

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