333.82
I61E
           Wali, Mohan K (Ed.)
               Ecology and coal resource development \ Mohan K Wali - New York : Pergamon Press, 1979.
               xiv, 541-1091p.
                v.2

                ISBN: 0-08-023863-7

C2037
                Subjects: Coal-Congresses; Coal mines and mining-Congresses; Energy policy-Congresses; Environmental protection-Congresses.