U.S. Dept. of commerce <br/><br/>
Report of the 70th national conf. on weights and measures 1985   

 - Washington  NBS  1985 
 - 262. 
<br/><br/><label>LCCN: </label>26-27766 
<br/><br/><label>Dewey Class. No.: </label>389  / N85