عناصر مشابهة

• Further Studies On AVian Coryza
  بواسطة: El Sayed, Maha Awad Alla منشور: (1997)
• Studies on the Helminth Parastes Infesting aquatic Egyptian and Migrant Birds
  بواسطة: Desoky, Enas Amin Mohamed منشور: (1981)
• Some studies on bacterial causes of mortalities in ducks at Sharkia governorate
  بواسطة: El Banna, Helmy Ibrahim Ragab منشور: (1997)
• Evaluation of some commercially available vaccines of avian coccidiosis
  بواسطة: Farag, Hatem Abd Alrazek Ali منشور: (2004)
• The Distribution of Number of Infectives With Bird Flu for Finite Populations of Birds
  بواسطة: M., Hassan S. منشور: (2004)