Lawes, D.A. <br/><br/>
Rainfall conservation and the yield of cotton in Northern Nigeria /    
by D.A. Lawes. 
 - London :   Empire Cotton Growing Corporation,   1962. 
 - [307-318] p. :    ill., tables ;    25 cm. 
 - Research memoirs.   .
<br/><br/>Includes bibiographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops and water ----Northern Nigeria.----<br/>Water conservation.----Northern Nigeria.----<br/>Cotton growing --------