Obruchev V <br/><br/>
Fundamentals of geology 

 -  1959 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>68054 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H, J9;2-;6-10-;12