Letchford, S. <br/><br/>
Business mathematics and statistics / 
S. Letchford. 
 - 2nd.ed. 
 - London :  Donnington,  c1977. 
 - x,546 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0304297607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business mathematics.<br/>Commercial statistics.
<br/><br/><label>LC Class. No.: </label>HF5691  / .L39