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The producers' price system and the coffee and cocoa trade at village level in West Africa
Muntjewerff, C. A., (1982)
Cocoa exports' effects of the European Union's sanitary and phytosanitary measures
Kareem, Olayinka Idowu, (2016)
Social capital and human capital in the colonies : a study of cocoa farmers in Western Nigeria
Obikili, Nonso, (2015)