Atwan, Asaad Hussein <br/><br/>
MANAHIJ AL- BAHTH AL -ILMI =Research Methodology / 
Usaf Haleel Ashad  Hussian 
 - Beirut:   Dar Ai Kotob Ai -ilmiyah,  1971. 
 - 240 P 
<br/><br/><label>ISBN: </label>9782745192622 
<br/><br/><label>Dewey Class. No.: </label>492.7  / ATW/M