Alkhadrawy, Thanaa Elsayed Mohamed  <br/><br/>
Use of Azolla as an alternative source of mineral nitrogen for some crops  [computer file]/ 
 استخدام الأزولا كمصدر نيتوجيني بديل للنيتروجين المعدنى في بعض المحاصيل. 
Thanaa Elsayed Mohamed Alkhadrawy. 
 -  2011. 
 - Computer  laser  optical disk; c4 3/4 in. 
<br/><br/>Thesis (M.S.)-- Ain Shams University, 2011 . 
<br/><br/>Includes bibliographical references (leaves[22]) . 
<br/><br/><br/>Systems requirements: Adobe Reader. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Azolla as fertilizer.<br/>Crops--Fertilizers<br/>Nitrogen--Fixation.<br/>Nitrogen fertilizers.