Casley, D. J. <br/><br/>
Data collection in developing countries 
D.J. Casley and D.A. Lury 
 - Oxford  Clarendon Press  1981 
 - 244p. 24cm 
<br/><br/><label>ISBN: </label>0198771231 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sampling (Statistics)<br/>Social surveys--Underdeveloped areas