lehtonen, Risto. <br/><br/>
Practical Methods for Design and Analysis of Complex Surveys /  
by Risto Lehtonen and Erkki J. Pahkinen. 
 - 1st ed /  
 - New York :   John wiley & Sons, Inc ,   1996 
 - p337 :  
<br/><br/><label>ISBN: </label>0471 93934 X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sampling Techniques
<br/><br/><label>Dewey Class. No.: </label>B2817  / N4