Rittmann A <br/><br/>
Voleanoes and their activity 
Rittmann A; Vincent E A 
 -  1962 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H411, K2