Gray, George Robert,  1907-1983, <br/><br/>
Composition and properties of oil well drilling fluids / 
George r. gray, h. c. h. darley, Walter f. Rogers 
 - 4 
 - 630 páginas 
<br/><br/> "first-3d ed. by w. f. rogers" 
<br/><br/><label>ISBN: </label>0872011291 
<br/><br/><label>LC Class. No.: </label>TN871.2  / G73 1980