Channel conditions in the lower Toutle and Cowlitz rivers resulting from the mudflows of May 18, 1980 / 
by R.E. Lombard ... [et al.] 
 - Reston, Va. :  U.S. Department of the Interior,  1981 
 - v, 16 p. :  ill., maps ;  26 cm. 
 - Geological Survey circular ;  no. 850-C .
<br/><br/>Bibliography: p. 16 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lahars--Washington (State)
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Toutle River (Wash.)<br/>Cowlitz River (Wash.)<br/>Saint Helens, Mount (Wash.)--Eruption, 1980
<br/><br/><label>Dewey Class. No.: </label>551.4890979788