Porkess, Roger <br/><br/>
Collins dictionary of statistics 

 - London  Collins  1988 
 - xii,267p. 
<br/><br/><label>ISBN: </label> UKP 2.95 
<br/><br/><label>Source: </label> UKP 2.95 
<br/><br/><label>Dewey Class. No.: </label>519.50321 POR