Selman, I. W. <br/><br/>
Influence of gibberellic acid and nitrogen sprays on transmission of cabbage black ringspot virus by myzus persicae (sulz.) /  
I.W. Selma n and Umarany Kandiah. 
 - Ashford, Kent  :    Wye College, University of London,    1971. 
 - 359-365 p. :    ill., plates ;    26 cm. 
 - Reprint ;    no. 502. .
<br/><br/>Includes bibliographical references: p. 364-365. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Turnip mosaic virus.<br/> Plants -- Effect of gibberellins on.