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1by Danso, George K., Cofie, Olufunke O., Annang, L., Obuobie, Emmanuel, Keraita, Bernard N.
Published 2004Conference Paper bibliotecaCGIAR -
2by Obuobie, Emmanuel, Keraita, Bernard N., Danso, George K., Amoah, Philip, Cofie, Olufunke O., Raschid-Sally, Liqa, Drechsel, Pay
Published 2006Book bibliotecaCGIAR