Gray, George Robert,   1907- <br/><br/>
Composition and properties of oil well drilling fluids / 
George Gray, H. C. H. Darley, Walter F. Rogers 
 - 4 ed. 
 - xii, 630 p. :  il. ;  24 cm. 
<br/><br/> First-3rd ed. by W.F. Rogers 
<br/><br/>Incluye referencias bibliográficas e índices 
<br/><br/><label>ISBN: </label>0872011291 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LODOS DE PERFORACION
<br/><br/><label>Dewey Class. No.: </label>622.338  / Gr72