Williams, R J <br/><br/>
Catalysts for hydrocrackimg and refining heavy oils and tars part 2 

 - Canada:   Energy Research Program,                   
 - 31p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language
<br/><br/><label>Subjects--Index Terms: </label>Industry 
<br/><br/><label>Universal Decimal Class. No.: </label>668.7  / L5