How to write metric :    a style guide for teaching and using SI uni ts. 

 - London :    Her Majesty's Stationery Office,    1977. 
 - 33 p. ;    21 cm. 
<br/><br/><label>ISBN: </label>0117008672 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Metric system -- Study and teaching
<br/><br/><label>Dewey Class. No.: </label>530.812 HOW