Burgess Robert G <br/><br/>
Key variables in social investigation 

 - London  Routledge and Kegan Paul         1986 
 - xi, 276p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>YB4, M6