عناصر مشابهة

• Studies on Some Avian Viruses with Special Reference to a Heat Rrsistant Newcastle Disease Virus
  بواسطة: Eid, Amal Anis Mahdi منشور: (1994)
• Some epidemiological studeis on avian turberculosis
  بواسطة: El Bassiouni, Ahmed Ahmed Ali منشور: (1983)
• Studies on salmonella infecton in chickens in sharkia province
  بواسطة: Abraheem, Oumyma Kamel منشور: (1983)
• Epidemiological and Immunological Studies on Bovine Tropical Theileriosis
  بواسطة: El Gaabary, Magdy Hassanin Abd Elkader منشور: (1995)
• Incidence, Distribution and ecology of argas persicus and its role in transmission of blood parasites in sharkia governorate
  بواسطة: Ahmed, Nagwa Eid منشور: (1979)