Toma, P. <br/><br/>
Progress and innovations in drilling 

 - Chichester, England :   Wiley,   1991. 
 - 20 p. 
 - World Petroleum Congress; 9 .
<br/><br/> 15th World Petroleum Congress. Buenos Aires, 1991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PETROLEO<br/>PERFORACION
<br/><br/><label>Universal Decimal Class. No.: </label>665.6