Harper,W.M <br/><br/>
Statistics / 
W.M.Harper. 
 - 5th ed. 
 -  Pitman  1988. 
 - xii, 464 p. :  ill. ;  18 cm. 
<br/><br/><label>ISBN: </label>0712107886 
<br/><br/><label>Dewey Class. No.: </label>519.5