Heiken, Grant <br/><br/>
Volcanic ash 
Grant Heiken, Kenneth Wohletz 
 - Berkeley  University of California Press  c1985 
 - ix, 246 p.  ill  37 cm. 
 - Los Alamos series in basic and applied sciences .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanic ash, tuff, etc.<br/>Volcanoes
<br/><br/><label>Dewey Class. No.: </label>552  / .23