Rizk, Roshdy Ayad. <br/><br/>
Environmental factors affecting the population density of red spider mites on cotton  [microform] / 
Roshdy Ayad Rizk. 
 -  1974. 
 - 184, 4 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (M.S.)-- Ain Shams University, 1974. 
<br/><br/>Includes bibliographical references (leaves 182-184) 
<br/><br/><br/>Microfiche. <br/>ASUNET, <br/>Ain Shams University, <br/>3 microfiches : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cotton--Diseases and pests.<br/>Spider mites.<br/>Spider populations.