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 - International Congress for Energy and the Ecosystem (1978 University of North Dakota); Wali, Mohan K. (New York Pergamon Press, 1979)
Includes bibliographies and indexes.
Keywords: Coal -- Congresses; Coal mines and mining -- Congresses; Energy policy -- Congresses; Environmental protection -- Congresses; Electronic books