Institution of mining and metallurgy 

 - London  Institution of mining and Mettalurgy      1919 
 - 95p.  cm. 
<br/><br/><label>Standard No.: </label>30450 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOLOGY
<br/><br/><label>Dewey Class. No.: </label>HZ.3,d, E9.3-;1