كي ننسب الفضل لاهله هذا هو صاحب الموضوع الاصلي
Dr. Mohammad Al-Deghairi
Department of Crop Production & Protection
College of Agriculture and Veterinary Medicine
Qassim University,
P.O. Box: 6622, Bureidah 51452
Saudi Arabia
Phone: (009666)380-0050
Fax: 009666 380-1360
Mobile: 00966500060664
E-mail: mdoghair@hotmail.com ; mdoghair@yahoo.com
WebPage: http://www.arabscientist.org/english/page/189