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    The effects of alley cropping and fertilizer application on continuously cropped maize by Shannon, D.A., Vogel, W.O., Kabaluapa, K.N.

    Published 1994
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    Journal Article
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    Onfarm trials comparing the local streakdisease susceptible maize with a streakdisease resistant variety in southeastern Zaire by Vogel, W.O., Berhe, T., Hennessey, R.D.

    Published 1991
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    Book Chapter
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    A field guide for onfarm research with special reference to improvement of cropping systems and techniques in West and Central Africa by Mutsaers, H.J.W., Vogel, W.O., Palada, M.C., Fisher, M.N.

    Published 1986
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    Manual

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