Studies in petrochemicals:   Teheran, Iran 16-30 November 1964 
/ United Nations 
 - New York:   United Nations,   1966 
<br/><br/> Vol. 1; xi, 565p.<br/>Vol. 2; viii, 1078p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical technology
<br/><br/><label>Subjects--Index Terms: </label>Petrol chemical 
<br/><br/><label>Universal Decimal Class. No.: </label>665.5  / K4.1