Ecology and coal resource development :  based on the International Congress for Energy and the Ecosystem, held at the University of North Dakota, Grand Forks, North Dakota, 12-16 June, 1978 / 
edited by Mohan K. Wali. 
 - New York :  Pergamon Press,  c1979. 
 - Vol.  :  ill. ;  25 cm. 
<br/><br/>Vol. 2- 
<br/><br/><label>ISBN: </label>0080238637 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--Congresses.<br/>Coal mines and mining--Congresses.<br/>Energy policy--Congresses.<br/>Environmental protection--Congresses.
<br/><br/><label>Dewey Class. No.: </label>333.82  / ECO 1979