Metric practice guide to the use of SI - the International system of units. 

 - 2a. ed. 
 - Washington:  API,  1973 
 - 32 p.  ilustraciones., cuadros.  
<br/><br/>06292 
<br/><br/>Scope. SI units and symbols. Rules for SI style and usage. Rules for conversion and rounding. Appendixes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sistema Métrico<br/>Petróleo<br/>Normalización
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Estados Unidos
<br/><br/><label>Dewey Class. No.: </label>389.6  / A642m