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IITA and ILCA onfarm alley farming research: lessons for extension workers by Whittome, M.P., Spencer, D., Bayliss-Smith, T.

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Future prospects for cassava root yield in sub Saharan Africa by Nweke, F., Spencer, D.

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Farming systems research strategy for the development of inland valleys for increased food production in West Africa by Spencer, D.

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Measuring the sustainability and economic viability of tropical farming systems: a model from subSaharan Africa by Ehui, Simeon K., Spencer, D.

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Collecting meaningful data on labour use in onfarm trials in subSaharan Africa by Spencer, D.

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Economic analysis of cutandcarry, and alley cropping systems of mulch production for plantains in southeastern Nigeria by Ruhigwa, B., Gichuru, M., Spencer, D., Swennen, Rony L.

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The technology adoption process in subsistence agriculture: the case of cassava in southwestern Nigeria by Polson, R., Spencer, D.

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Farming systems research strategy for the development of inland valleys for increased food production in West Africa by Spencer, D.

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Institutionalizing the farming systems perspective in multicommodity research institute: the role of systemsbased research groups by Spencer, D.

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Indices for measuring the sustainability and economic viability of farming systems: RCMP research monograph, No. 3 by Ehui, Simeon K., Spencer, D.

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Biological nitrogen fixation and sustainability of tropical agriculture by Mulongoy, K., Gueye, M., Spencer, D.

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