Walton, Kenneth,  1923- <br/><br/>
The arid zones / 
K. Walton 
 - London :  Hutchinson University Library,  1969 
 - 175 p. :  ill., maps, plan. ;  22 cm. 
<br/><br/>Bibliography : p. 161-168. 
<br/><br/><label>ISBN: </label>090959507o 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arid regions