Spread of cocoa swollen shoot virus to recent plantings in Ghana von Ollennu, L.A.A., Owusu, G.K., Thresh, J.M.

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development of Phytophthora canker on different cocoa genotypes infected and uninfected with cocoa swollen shoot virus von Opoku, I.Y, Dakwa, J.T, Ollennu, L.A.A

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Coppicing experiments on the spread and control of cocoa swollen shoot virus in Ghana von Legg, J.T., Lovi, N.K., Ollennu, L.A.A., Owusu, G.K., Thresh, J.M.

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Effect of alfalfa mosaic virus isolates on forage yield of lucerne (Medicago sativa) in Britain von Bailiss, K.W, Ollennu, L.A.A

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Cocoa swollen shoot: an archetypal crowd disease von Thresh, J.M, Owusu, G.L.K, Ollennu, L.A.A

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