Wetherill, Barrie <br/><br/>
Elementary statistical methods / 
by G. Barrie Wetherill 
 - London :  Chapman & Hall,  1972 
 - 346 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>6412113708 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics