Penkal, Russell F. <br/><br/>
Environmental effects of western coal surface mining / 
Russell F. Penkal and Rechard W. Gregory 
 - Minnesota :  U.S. E.P.A,  1980 
 - viii, 46 p. :  ill ;  28 cm. 
<br/><br/> EPA-600/3-80-045 
<br/><br/>pt.6 : Smallmouth bass and largemouth bass in the  Tongue river reservoir, Montana, 1975-76 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Impact studies<br/>Technology assessment--Natural resources impact--Coal mine
<br/><br/><label>Dewey Class. No.: </label>333.714