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Extension organisation, field extension activity and extension training in coffee improvement projects of Ethiopia : a case study of Gomma Coffee Improvment Project Area
Tekle, Getenesh Sintayehu, (2001)
Livestock, land use and agricultural intensification in sub-Saharan Africa
Bourn, David, (1994)
Agricultural intensification by smallholders in the Western Brazilian Amazon : from deforestation to sustainable land use
Vosti, Stephen Anthony, (2002)