Smith, Robert B. <br/><br/>
An introduction to social research: handbook of social science methods / 

 - Cambridge  Cambridge University Press  1983 
 - 514p. 
 -  Vol. I .
<br/><br/><label>ISBN: </label>0884108902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences - Methodology