EL-Gamal, Refaat Mohamed Ali. <br/><br/>
Immunological studies on the causative agent of columnaris disease of freshwater fish  [microform] / 
 دراسات مناعية عن مسببات مرض الكولمنارز في أسماك المياه العذبة. 
Refaat Mohamed Ali  EL-Gamal. 
 -  2000. 
 - 139,5 leaves :  ill. ;  30 cm. 
<br/><br/>Thesis (Ph.D. )--Seuz Canal University, 2000. 
<br/><br/>Includes bibliographical reference (leaves 121-139) 
<br/><br/><br/>Microfiche. <br/>Cairo, Egypt : <br/>ASUNET, <br/>3  microfiche : negative. 
<br/><br/><br/>Summary in Arabic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater fishes.<br/>Freshwater fishes--Diseases.<br/>Columnaris disease.