Laaksonen, Seppo. <br/><br/>
Survey methodology and missing data: tools and techniques for pratitioners. 

 - Switzerland.  Springer International Publishing.  c2018. 
 - 224p.  xii 
<br/><br/> Book. 
<br/><br/><br/>Eng. 
<br/><br/><label>ISBN: </label>978-3-030-077044 978-3-319-79011-49(ebook) 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 900