Levin, Jack <br/><br/>
Elementary statistics in social research 

 - 2nd ed 
 - Harper & Row, Pub, New York  1977 
 - x, 293 
<br/><br/><label>ISBN: </label>0-06-043985-8 
<br/><br/><label>Dewey Class. No.: </label>311 Lev