عناصر مشابهة

• Effect of recycling of poultry wastes in growing rabbits ratton to control environment pollution\\ 
  بواسطة: El Amary, Hanaa Hashem منشور: (1991)
• Relation between school environment and musculo skeletal disorders\\ 
  بواسطة: Abdel Moneim, Jihan Mohamed منشور: (2006)
• The environmental injuries arising from zinic deficiency in the egyptian environment and methods of their cricumvention\\ 
  بواسطة: El Badr, Sherif Ali El Sayed  منشور: (2005)
• Compardtire study of pesticides spraying applications with a special reference to its influence on agricultural environment\\ 
  بواسطة: EL hakim, Mohamed Mohamed Khalil  منشور: (1997)
• The effect of ground water usage on the health statues of the residents of wadi el natroun\\ 
  بواسطة: Badr, Azza Mohamed  منشور: (2009)