Introduction to business statistics 
Weiers, Ronald M. 
 - Seventh edition. 
 -  Cengage Learning Asia Pte Ltd.  2014 
 - xxii, 806 pages. 
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<br/><br/><label>ISBN: </label>978-9-81462414-5 
<br/><br/><label>Dewey Class. No.: </label>519.5 W418 2014