Wortmann, C. S. (1993). Research for sustainable agricultural production systems in high altitude zones of Eastern Africa. International Center for Tropical Agriculture.
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Cita Chicago Style (17a ed.)
Wortmann, Charles S. Research for Sustainable Agricultural Production Systems in High Altitude Zones of Eastern Africa. International Center for Tropical Agriculture, 1993.
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Cita MLA (9a ed.)
Wortmann, Charles S. Research for Sustainable Agricultural Production Systems in High Altitude Zones of Eastern Africa. International Center for Tropical Agriculture, 1993.
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