Coal deposits : origin, evolution, and present characteristics : an analysis of the present coal deposits in terms of the geometrical, mechanical, thermal, and chemical aspects of the Earth's behavior during the past 4.6 billion years / J. H. Tatsch.
Coal deposits : origin, evolution, and present characteristics : an analysis of the present coal deposits in terms of the geometrical, mechanical, thermal, and chemical aspects of the Earth's behavior during the past 4.6 billion years / J. H. Tatsch.