Casley, D. J. <br/><br/>
Data collection in developing countries / 
[by] D. J. Casley and D. A. Lury. 
 - Oxford :  Clarendon Press,  1981. 
 - xi, 244 p. :  24 cm. 
<br/><br/><label>ISBN: </label>0198771231 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sampling (Statistics).<br/>Developing countries--Statistical services.