el-Refai, A H <br/><br/>
Studies on nitrogen fixation of Azotobacter chroococcum.  [electronic resource] 

 -  Microbiologia espanola   
 - 105-15 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0026-2595 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Azotobacter--growth & development<br/>Culture Media<br/>Nitrogen Fixation