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2
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Induced innovation and productivity-enhancing, resource-conserving technologies in Central America : the supply of soil conservation practices and small-scale farmers' adoption in Guatemala and El Salvador / Monika Barbara Zurek.
- Lang,
- 2004.
- Frankfurt am Main [etc.] :
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Allocating water resources for agricultural and economic development in the Volta river basin / Patrick Obeng-Asiedu.
- Lang,
- 2004.
- Frankfurt am Main [etc.] :