Agriculture in semi-arid environments contributors, H. P. Bailey ... [et al.] 
edited by A. E. Hall, G. H. Cannell, and H. W. Lawton 
 - Berlin  Springer-Verlag  1979 
 - xvi, 340 p.  ill.  25 cm. 
 - Ecological studies  v. 34 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dry farming<br/>Arid regions agriculture