A critical evaluation of published western coal-resource estimates - Glass, Gary; Coal geology symposium: The evaluation of North American coal resources ( Nov. 1979) (1981)
bibliogr. p. 541
<Donation ORSTOM>
Keywords: Gisement potentiel; Coal measures; Charbon; Réserve; Etude critique; Etats Unis -- Colorado; Etats Unis -- Wyoming; Etats Unis -- Montana