Leroy, L.W. <br/><br/>
Subsurface geologic methods. 

 - Golden :  Colorado School of Mines,  1951. 
 - 1156 p. :  il. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología<br/>Metodología
<br/><br/><label>Subjects--Index Terms: </label>Subsuelo 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>550.8