Melesse Temesgen Leye <br/><br/>
Conservation Tillage Systems and Water Productivity - Implications for Smallholder Farmers in Semi-Arid Ethiopia  PhD, UNESCO-IHE Institute for Water Education, Delft, The Netherlands 

 -  Taylor and Francis  2007 
<br/><br/><label>ISBN: </label>9780429094132 
<br/><br/><label>Source: </label>EBOOK