PhD defence: Influence of biophysical aspects on the performance of sustainable land management measures in the Usambara highlands of Tanzania

PhD candidate: JM (Juma) Wickama. Promotor: prof.dr. CJ (Coen) Ritsema. Co-promotor: dr.ir. CA (Aad) Kessler & dr. ir. G Sterk. Organisation: Wageningen University, Soil Physics and Land Management

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