Wetherill, Barrie <br/><br/>
Elementary statistical methods / 
by G. Barrie Wetherill 
 - London :  Methuen,  1967 
 - 329 p. ;  25 cm. 
<br/><br/>Bibliography : p. 321-324 
<br/><br/><label>ISBN: </label>0416443303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics