Francis, Peter W. <br/><br/>
Volcanoes 

 - Harmondaworth  Penguin Books Ltd.  1976 
 - 268p.  20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanoes
<br/><br/><label>LC Class. No.: </label>QE521.F7