Brantly, J.E. <br/><br/>
Rotary drilling handbook 

 - Sixth 
 - Palmer Publications  United State of America  1961 
 - 825p.  ILL, Fig., Table, Chart 
<br/><br/><label>Nat. Bib. No.: </label>3035 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Universal Decimal Class. No.: </label>621.95  / BRA