Dryland Agriculture  Strategies for Sustainability  
Edited R.P. Singh, J.F. Parr & B.A. Stewart 
 - New York  Springer- Verlag  1990 
 - xiv, 373p. 
<br/><br/><label>ISBN: </label>1461389842 
<br/><br/><label>LC Class. No.: </label>S615  / .D79 1990