Thirkettle, G.L <br/><br/>
Wheldon's business statistics and statistical method 

 - 9th ed 
 - London  Pitman  1981 
 - ix,278p.  Illustration 
<br/><br/><label>ISBN: </label>0273026968 
<br/><br/><label>Dewey Class. No.: </label>001.422  / THI