Heiken, Grant  <br/><br/>
Volcanic ash 
Grant Heiken, Kenneth Wohletz 
 - Berkeley, CA  Univ. of California Press  1985 
 - 246p. :  ill. ;  37cm 
 - Los Alamos series in basic and applied sciences .
<br/><br/><label>ISBN: </label>0520052412 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanic ash, tuff, etc.<br/>Volcanoes.