Ploutz, Paul F. <br/><br/>
The metric system  content and methods 
Paul F. Ploutz. 
 - 2d ed. 
 - Columbus, Ohio  Merrill  c1977. 
 - viii, 109 p.  ill.  28 cm. 
<br/><br/><label>ISBN: </label>0675085381 
<br/><br/><label>LCCN: </label>76044130  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metric system--Programmed instruction.
<br/><br/><label>LC Class. No.: </label>QC93  / .P57 1977 
<br/><br/><label>Dewey Class. No.: </label>530/.8