Sufian, Abu Jafar Mohammad. <br/><br/>
Mehods and techniques of social research/ 
by Mohammad, Sufian Abu Jafar. 
 - 2nd ed. 
<br/><br/>
<br/><br/><label>LC Class. No.: </label>300.72 
<br/><br/><label>Dewey Class. No.: </label>