Gruse,William A. <br/><br/>
The chemical technology of petroleum 

 - 2nd 
 - London  Mcgraw hikk book company  1942 
 - 733 
<br/><br/> Cg mean Chemistry General and Practical Page 476-483 in A-Z Register (Acc. No. Cg1-Cg219) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English Literature
<br/><br/><label>Dewey Class. No.: </label>Cg204