Williams, Howel, b.1898 <br/><br/>
Volcanology 
Howel Williams and Alexander R. McBirney ; illustrated by Christine McBirney 
 - Cooper, San Francisco, Calif.  Freeman  1979 
 - 397 p ;  ill :  27 cm 
<br/><br/> Includes index 
<br/><br/>Bibliography: p.  367 -384 
<br/><br/><label>ISBN: </label>0877353212 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanoes.<br/>Volcanic ash, tuff, etc.<br/>Volcanism.