Norman, David. <br/><br/>
Farming systems development and soil conservation / 
David Norman & Malcolm Douglas. 
 - New Delhi :  Daya Publishing House,  2007. 
 - 173 pages ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8170355125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation.