American Petroleum Institute   <br/><br/>
Conversion of operational and process measurement units to the metric (SI) system  (Book) 

 - Washington, D.C.  American Petroleum Institute  1974 
 - 57p.  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metric system
<br/><br/><label>Universal Decimal Class. No.: </label>389.151:622.323 AME  / 11751