Pratt Brian <br/><br/>
Choosing Research Methods Data Collection For Development Workers Development Guidelines No 7 

 -  Oxford : Oxfam 1992. 
 - 120 
 - Occasional Paper Series No.1 .
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0855981776 (Pbk);Zw