The HPI outlook'91 :  a special report on the Hydrocarbon Processing Industry / 
prepared annually by Hydrocarbon Processing magazine. 
 - Houston, Tex. :  Gulf Publishing Co.,  1990. 
 - 40 p. :  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum industry.