Spear, Mary Eleanor <br/><br/>
Practical charting techniques / 
Mary Eleanor Spear 
 - New York :  McGraw-Hill,  1969 
 - xxii, 394 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> USD 13.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics--Graphic methods
<br/><br/><label>Dewey Class. No.: </label>311.26