Browsing by Author "Otsuka, H."
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Item Development of Soil Surveys in Tanzania(Pedologist) Msanya, B. M.; Maggogo, J. P.; Otsuka, H.Item Organic matter and humus characteristics of some volcanic ash soils of South western Tanzania(SADC Project) Msanya, B. M.; Otsuka, H.; Araki, S.; Fujitake, N.