عناصر مشابهة

• Pollution of certain cereal forge crops with fungal pathogens in egypt\\ 
  بواسطة: El Sayed, Fawzeia Mohamed Bekheet منشور: (1990)
• Effect of recycling of poultry wastes in growing rabbits ratton to control environment pollution\\ 
  بواسطة: El Amary, Hanaa Hashem منشور: (1991)
• The effect of some fresh water pollution on the snail vectors of schistosmiasis in egypt\\ 
  بواسطة: El-Said, Khalil Mohamed  منشور: (1997)
• 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)
• Integrated management of aphids on wheat crop\\ 
  بواسطة: El Lathy, Kamel Hassan  منشور: (1999)