Workshop on Cleaner Use of Lower Grade Coal : London and Stoke Orchard 3-13 April 1991 /
United Nations Industrial Development Organization.
Institute of Energy (Great Britain)
Workshop on Cleaner Use of Lower Grade Coal(1991 :London, England)
London : Institute of Energy,
1991.
In ring binder.
Volume 1: Proceedings - Volume 2: Visits and technology papers
Coal