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Junge, B. ,  Abaidoo, R.C. ,  Chikoye, D. ,  Stahr, Karl ,  [Soil conservation in Nigeria: past and present on station and on farm initiatives] ,  Soil conservation in Nigeria: past and present on station and on farm initiatives

Junge, B. ,  Abaidoo, R.C. ,  Chikoye, D. ,  Stahr, Karl ,  [Soil conservation in Nigeria: assessment of past and present initiatives] ,  Soil conservation in Nigeria: assessment of past and present initiatives