Coleman, Hywel. <br/><br/>
Petroleum :  downstream / 
Hywel Coleman. 
 - London :  Heinemann Educational Books,  1984. 
 - 39 p. :  ill. 
 - Heinemann science and technical readers .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Readers--Petroleum.<br/>Petroleum--Transportation.<br/>Petroleum--Refining.<br/>English language--Textbooks for foreign speakers.