Determination of ash from petroleum products / 
British Standards Institution 
 - leaves :  illustrations ;   30 cm. 
 - British standard ;  BS 4450 : 1978-EN 7 .
 - British standard ;  BS 4450 : 1978-EN 7 .
<br/><br/><label>ISBN: </label>0580088383 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum products.<br/>Distillation, Fractional.