Katta,Youssef Sulli Mohamed. <br/><br/>
The comparative efficiency of high and low yielding testers in evauating the combining abiliity of inbread lines of maize  [microform] / 
 الكفاءة النسبية لبعض الكثافات العالية المحصول والمنخفضة المحصول فى تقدير قوة التألف لسلالات الذرة النقية. 
Youssef Sulli Mohamed Katta. 
 -  1971. 
 - 77,5Leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (Ph.D.)--Ain Shams University, 1971. 
<br/><br/>Includes bibliographical references (leaves73-77) 
<br/><br/><br/>Microfiche. <br/>Cairo, Egypt : <br/>ASUNET, <br/>2 microfiches:negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Corn--Yields<br/>Corn--Breeding.<br/>Corn--Selection.