Alzayat, Asmaa Ahmad Ali Ali Studies on prevalence of H9 avian influenza virus [computer file] دراسات على تواجد الاصابة بفيروس إتش- ٩ لإنفلونزا الطيور. Asmaa Ahmad Ali Ali Alzayat - 2017. - Computer laser optical diskes; 4 3/4 in. Thesis (M.S.) -- Mansoura University, 2017. Includes bibliographical references (Leaves70-90) Systems requirements : Adobe Reader Summary in Arabic Subjects--Topical Terms: Avian influenza--Diagnosis.