Proceeding of united nations interregional seminar on petroleum refinninf in developing counters 

 -  1973 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>42264 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum
<br/><br/><label>Dewey Class. No.: </label>F555p1,N73, L3.2-;1