P. W. Norris <br/><br/>
Principles and practice of commercial arithmetic 

 - London  Isaac Pitman & Sons Limited  1947 
 - 428p 
<br/><br/>P. W. Norris: Principles and practice of commercial arithmetic.  London.  Isaac Pitman & Sons Limited, 1947.--(511.8NOR)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>511.8  / NOR