Hall, A.E. <br/><br/>
Agriculture in Semi-Arid Environments 
/ edited by  A.E. Hall 
 - Berlin, Heidelberg:  Springer-Verlag,  1979. 
 - xvi, 340p. 
<br/><br/><label>ISBN: </label>3540094148 
<br/><br/><label>Dewey Class. No.: </label>630.9154  / HAL/A