.Bassey, M. W., & .Schmidt, O. G. (1989). Abrasive-disk dehullers in Africa: From research to dissemination. International Development Research Centre.
Lua i Stíl Chicago (17ú heag.).Bassey, Michael W., agus O. G. .Schmidt. Abrasive-disk Dehullers in Africa: From Research to Dissemination. Ottawa, Ont., Canada: International Development Research Centre, 1989.
Lua MLA (9ú heag.).Bassey, Michael W., agus O. G. .Schmidt. Abrasive-disk Dehullers in Africa: From Research to Dissemination. International Development Research Centre, 1989.
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