Ripper, Walter Eugene,  1908-1965 <br/><br/>
Cotton pests of the Sudan :  their habits and control / 
W. E. R ipper and Lloyd George. 
 - Oxford :  Blackwell Scientific Publications,  1965 
 - xii, 345 p. :  ill. (part col.) , map ;  27 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cotton--Diseases and pests.<br/>Agricultural pests--Sudan.
<br/><br/><label>Dewey Class. No.: </label>633.51