Pierce, Clyde I. <br/><br/>
Laboratory oil-recovery experiments using ultrasonic energy  
Pierce, Clyde I. 
 - Washington  Bureau of mines  1968 
 - Report Investigation  7144 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>ultrasonido<br/>petroleo
<br/><br/><label>Universal Decimal Class. No.: </label>622.276:66.084.8 (47)