Rahn, Joan Elma. <br/><br/>
The metric system / 
Joan Elma Rahn ; illustrated by Ginny Linville Winter. 
 - New York :  Atheneum,  1976. 
 - 79 p. :  ill. 
<br/><br/> Explains the principles and uses of the metric system. 
<br/><br/><label>ISBN: </label>0689305109 
<br/><br/><label>LCCN: </label>75029445 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metric system.
<br/><br/><label>Dewey Class. No.: </label>389