عناصر مشابهة

• Environmental and Genetic Aspects of Some Productive Traits In Ducks
  بواسطة: El Maghawry, Ahmed Magdy Mohamed منشور: (1983)
• Hatching And Rearing of Ducks
  بواسطة: Metwally, Mahmoud Abd Alrahman منشور: (1993)
• Micromorphological studies of the oesophagus and stomach of the growing Sudanese ducks
  بواسطة: Salem, Hoda Fouad Ahmed منشور: (1982)
• Epidemiological Studies on Pasteurellosis in Ducks
  بواسطة: Ghanem, Ibraheim Abd Alrahman منشور: (1986)
• Studies on Productive and Reproductive Efficiency of Female Rabbits
  بواسطة: Yassen, Hoda Mohammed منشور: (1992)