Edgar, Sherra G. <br/><br/>
Bar graphs 

 - 24 p. :  col. ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781624314667 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graphic methods--Juvenile literature
<br/><br/><label>Index Terms--Genre/Form: </label>
<br/><br/><label>Dewey Class. No.: </label>518.23