Youssef, Abbas Seif El-Nasr  <br/><br/>
Ecological and biological studies on olive psyllid, Euphyllura straminea loginova and its control on olive trees in Egypt  [compurter file]/ 
 دراسات بيئية و بيولوجية على حشرة بسيليدى الزيتون و مكافحتها على أشجار الزيتون بمصر. 
Abbas Seif El-Nasr Youssef. 
 -  2011. 
 - Computer  laser  optical disk; c4 3/4 in. 
<br/><br/>Thesis (Ph.D.)-- Ain Shams University, 2011 . 
<br/><br/>Includes bibliographical references (leaves177-188) . 
<br/><br/><br/>Systems requirements: Adobe Reader. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Olive--Diseases and pests--Control.<br/>Olive trees--Diseases and pests--Control.<br/>Euphyllura<br/>Olea europaea