Wickama, Juma2022-09-152022-09-152019-02-20http://www.suaire.sua.ac.tz/handle/123456789/4574PhD ThesisenSoil conservationAgro-ecosystemsLand managementLand degradationSoil conservation measuresSoilUsambaraTanzaniaInfluence of biophysical aspects on the performance of sustainable land management measures in the Usambara highlands of TanzaniaThesis