Pons, Valdo <br/><br/>
Introduction to social research 

 - Dar es Salaam:  Dar es salaam University press.  1992 
 - xxx, 617p.:  ill.; [tabes]  20 cm. 
<br/><br/> Includes bibliographic and indexes 
<br/><br/><label>ISBN: </label>99760602308 
<br/><br/><label>LC Class. No.: </label>HN29.P6 1992