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Effect of infection level of sesame (sesamum indicum L.) seed by alternaria sesami on severity of alternaria leaf spot
(Faculty of Agriculture, University of Ruhuna. Kamburupitiya, 1998)
What is Happening in Africa in the 1990s?
(1992)
I think we are concerned about Africa because the performance of the economies generally, and
agriculture specifically, is declining not only compared with other developing regions but also
compared with the past. And, ...