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Doctoral theses

Kato, O.  1998.  Fire-fre Land Preparation as an Alternative to Slash-and-burn Agriculture in the Bragantina Region, Eastern Amazon: Crop Performance and Nitrogen Dynamics.  Doctoral thesis at  Faculty of Agriculture, University of Göttingen. 

Lange Ness, R.  1998.  Aufnahme von Calcium und Phosphat aus Hydroylapatit durch mykorrhizierte Maispflanzen.  Doctoral thesis at  Faculty of Agriculture, University of Göttingen. 

Waswa, P.  1998.  Abiophysical Analysis of Erosion Damage in a semi-arid Agro-ecosystem in Kenya: Towards Sustainable Land Management.  Thesis at  ZEF. 

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