عناصر مشابهة

• New approchers to control cohiteflies to minize the use of insecticides and environmental pollution\\ 
  بواسطة: Badry, Hoda Ahmed Mohamed منشور: (1997)
• Evaluation of some artificial diets for the silkworm /BOMBYX MORI L / under the egyption environmental conditions\\ 
  بواسطة: Fouda, Mohamed Mokhtar El-soudy منشور: (1997)
• Compardtire study of pesticides spraying applications with a special reference to its influence on agricultural environment\\ 
  بواسطة: EL hakim, Mohamed Mohamed Khalil  منشور: (1997)
• Use of azolla as a biofertilizer to reduce the dependance on the chemical fertilizers\\ 
  بواسطة: Nour El Din, Mohamed El Sayed Mahmoud 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)