Frost, Clyde M. <br/><br/>
Methods for refining crude shale oil produced by in situ retorting 
Frost, Clyde M.; Cottingham, Philip L. 
 - Washington  Bureau of mines  1974 
 - RI 7844 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>PETROLOGY
<br/><br/><label>Subjects--Index Terms: </label>CRUDO DE PETROLEO ACEITE CRUDE SHALE OIL 
<br/><br/><label>Universal Decimal Class. No.: </label>552