Hull, Edward,  1829-1917 <br/><br/>
Volcanoes :  Past and Present  [electronic resource] / 
Edward Hull 
 -  Project Gutenberg,  2010 
 - Project Gutenberg  31627 .
<br/><br/> Public domain in the USA. 
<br/><br/>Electronic text 
<br/><br/><label>Subjects--Index Terms: </label>Volcanoes Igneous rocks 
<br/><br/><label>LC Class. No.: </label>QE