Harrison, E. <br/><br/>
Soil erosion :  a memorandum. 

 - [London] :  Crown Agents for the Colonies on Behalf of the Govt. of Tanganyika Territory,  1937. 
<br/><br/> At head of title: Tanganyika Territory. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Erosion.<br/>Soil conservation -- Tanganyika.--Soil conservation -- Tanganyika.