Foxworthy, B <br/><br/>
Volcanic eruptions of 1980 at Mount St :  Helens :  the first 100 days 

 - Washington :  U. S. Geological survey,  1982 
 - 125 p: :  ill. 
 - U. S. Geological survey professional paper, 1249 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Géologie<br/>Volcanologie<br/>Volcan<br/>Eruption<br/>Siècle 20<br/>1980
<br/><br/><label>Subjects--Index Terms: </label>Amérique du Nord Etats Unis