عناصر مشابهة

• Epidemiological Studies on Pasteurellosis in Ducks
  بواسطة: Ghanem, Ibraheim Abd Alrahman منشور: (1986)
• SOME STUDIES ON VIRAL DISEASES OF DUCKS WITH SPECIAL REFERENCE TO DUDK VIRUS HEPATITIS AND DUCK VIRUS Enteritls
  بواسطة: Metwally, Abd Alnaby Younis منشور: (1998)
• Some studies on the vaccinal strain of duck plague virus
  بواسطة: Abd Alkhalek, Mohammed Abd Alkhalek Aly منشور: (1993)
• Trials for the production of duck plague virus vaccine
  بواسطة: Abd Alkhaleck, Mohamed Abd Alkhaleck Aly منشور: (1997)
• Current status of gumboro disease in Egypt
  بواسطة: Ali, Abd Alazeem Mohamed Abd Alazeem منشور: (2003)