Gewaily ,El-Sayed El-Sayed Ahmed. <br/><br/>
Behavior of some nutrient elements in rice soils under different irrigation intervals  [computer file]/ 
 سلوك بعض العناصر الغذائية فى أراضى الأرز تحت فترات رى مختلفة. 
El-Sayed El-Sayed Ahmed Gewaily. 
 -  2006. 
 - Computer laser optical disks;  4 3/4 in. 
<br/><br/>Thesis (Ph.D.)--Kafr El-Shiek University,2006. 
<br/><br/>Includes bibliographical references (leaves 218-230) 
<br/><br/><br/>System requirments:win word. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice--Fertilizers.<br/>Potassium--Effects on plants.<br/>Phosphatic fertilizers.<br/>Zinc fertilizers.<br/>Nitrogen fertilizers.<br/>Rice--Irrigation.<br/>Irrigation efficiency.