Khadr, Mohamed Saleh. <br/><br/>
Studies on nitrogen fixing blue-green algae in Egyptian soils   [microform] / 
Mohamed Saleh Khadr. 
 -  1975. 
 - 165, 14 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (Ph.D.)-- Al-Azhar University, 1975. 
<br/><br/>Includes bibliographical references (leaves 147-165). 
<br/><br/><br/>Microfiche. <br/>ASUNET, <br/>Ain Shams University, <br/>4 microfiches : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cyanobacteria.<br/>Nitrogen-fixing algae.<br/>Soils.