Leppan, H.D. <br/><br/>
The agricultural development of arid and semi-arid regions with special reference to South Africa / 
H.D. Leppan 
 - Pretoria :  SACNA ,  1928 
 - 280p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Agricultural development<br/>Arid regions
<br/><br/><label>Dewey Class. No.: </label>630.96  / LEP