Spear, Mary Eleanor <br/><br/>
Charting statistics / 
Mary Eleanor Spear 
 - New York :  McGraw-Hill Book,  1952 
 - xii, 253 p. :  ill. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> usd 4.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Graphic methods