Ahmed, Mohamed Hussien Hassan. <br/><br/>
Viruses associated with drop in egg production  [microform]/ 
 دراسة عن الفيروسات المصاحبة لانخفاض انتاج البيض. 
Mohamed Hussien Hassan Ahmed. 
 -   1995. 
 - 117, 2 Leaves:   ill. ;    30 cm. 
<br/><br/>Thesis (Ph.D.)-- Cairo University,1995. 
<br/><br/>Includes bibliographical references (leaves 108-117) 
<br/><br/><br/>Microfiche.Cairo, Egypt :ASUNET, <br/> 3 microfiches:negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Poultry -- Eggs.<br/>Poultry -- Virus diseases.