Abohassan, Prof,Dr.Atalla Ahmed <br/><br/>
Journal of King Abdul Aziz University, Meteorology, Enviroment and Arid Land Agriculture Sciences 

 - Jeddah: Scientific Publishing Centre,K.A.U 
 -  Page-145 
<br/><br/><label>ISBN: </label>1319-1039 
<br/><br/><label>Dewey Class. No.: </label>630.71173/A154k