Low grade coal resources, production and utilization
By: prepared for the Low Grade Coal Committee by Christo Christov and Hristo Todoriev.
Contributors: Todoriev, Nikola Kh.; World Energy Conference.; World Energy Conference. Low Grade Coal Committee.
Publisher: World Energy Conference
Published: 1989
Place of publication: London
Language: eng
Number of pages: 61
Subjects: Coal -- Analysis.; Lignite.; Coal reserves.; Coal -- Research.; Coal mines and mining.
Notes: "Report 1989".