Harper, W. M. <br/><br/>
Statistics / 
W.M. Harper. 
 - 6th ed. 
 - London :  ELBS with Pitman,  1992. 
 - x, 501 p. :  ill. ;  20 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0712110402 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.