TY - BOOK AU - EL-Gamal,Refaat Mohamed Ali TI - Immunological studies on the causative agent of columnaris disease of freshwater fish PY - 2000/// KW - Freshwater fishes KW - Diseases KW - Columnaris disease N1 - Thesis (Ph.D. )--Seuz Canal University, 2000; Includes bibliographical reference (leaves 121-139); Microfiche; Cairo, Egypt; ASUNET; 3 microfiche : negative ER -