Dumbar, Carl Owen,  1891-, <br/><br/>
Principles of stratigraphy / 
by Carl O. Dumbar and John Rodgers 
 - 356 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estratigrafía
<br/><br/><label>LC Class. No.: </label>QE651  / D8