Lefferts, Robert. <br/><br/>
Elements of graphics :  how to prepare charts and graphs for effective reports / 
[by] Robert Lefferts. 
 - New York :  London  Harper & Row,  c1981. 
 - viii, 166 p.  ill.  24 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0060125780 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graphic methods.