Williams, Howel,  1898- <br/><br/>
The ancient volcanoes of Oregon / 
Howel Williams. 
 - 2nd ed. 
 - Eugene :  University of Oregon,  1953. 
 - x, 68 p. :  ill. ;  26 cm. 
 - Condon lectures .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanoes--Oregon.
<br/><br/><label>Dewey Class. No.: </label>551.21