Tea production on the Usambaras with special reference to tea outgro wers - Seng'enge, G.O.G.L. (Kampala : Makerere University, 1972)
Dissertation (BSc. Agric.) -- Makerere University, 1972.
Includes bibliographical references: p. 65
Keywords: Tea -- Tanzania -- Usambara. -- Usambara. -- Usambara. -- Usambara