Spear, Mary Eleanor. <br/><br/>
Charting statistics / 
Mary Eleanor Spear. 
 - New York :  McGraw-Hill,  1952. 
 - xii, 253 p.  ill. ;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Graphic methods.
<br/><br/><label>Dewey Class. No.: </label>311.26  / SPC 1952