Purdy, G.A. <br/><br/>
Petroleum:  prehistoric to petrochemicals/ 
G.A. Purdy 
 - Vancouver:  Copp Clark Pub.,  c1958 
 - 492 p.:  ill.;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> $ 16.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum<br/>Petroleum--History<br/>Petroleum--Refining<br/>Petroleum products
<br/><br/><label>Dewey Class. No.: </label>665.5