Yen, T.F. <br/><br/>
The role of trace metals in petroleum/ 
T.F. Yen 
 - Michigan:  Ann Arbor Science Pub.,  c1975 
 - viii, 221 p.:  ill.;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0250400618  $ 20.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum<br/>Petroleum Chemicals<br/>Petroleum products
<br/><br/><label>Dewey Class. No.: </label>665.5