Abd El-Hakim, Mohammed Azmy. <br/><br/>
Symbiotic nitrogen fixation and growth of leguminous plants as influenced by some minor elements  [microform]/ 
 تأثير بعض العناصر النادره على تثبيت الازوت الجوى ونمو النباتات البقوليه. 
Mohammed Azmy Abd El-Hakim. 
 -  1974. 
 - 108, 2 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (M.S.)--Al-Azhar University, 1974. 
<br/><br/>Includes bibliographical references (leaves 97-108). 
<br/><br/><br/>Microfiche. <br/>ASUNET, <br/>Ain Shams University, <br/>2 microfiches : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrogen--Fixation.<br/>Nitrogen-fixing bacteria.<br/>Trace elements in agriculture.