عناصر مشابهة

• Studies On The Main Parasttic Diseases Affecting Cultured Fish And Its Influences By Some Ecological Factors
  بواسطة: Abd Alrahim, Gamal Al Nobi Ahmed منشور: (1998)
• Studies On Some Factors Affecting The Health And Survival Of Eel =
  بواسطة: El Doosoky, El Sayed Abdo Abdo منشور: (2001)
• Some Nutritional Factors Affecting Fresh Water Fish Production
  بواسطة: Shahat, Talaat Mahmoud منشور: (1991)
• Notes on The Main Ecological And Nutritional Diseases In Some warm Water Fishs
  بواسطة: Abd Alhamid, Nagwa Habashy Ahmed منشور: (2000)
• Preliminary Studies on The Condition Factor of Some Fishes under Different Circumstances
  بواسطة: Dief, Mohamed Usama Moustafa Hassan منشور: (1996)