00450nam a2200157Ia 4500001001100000005001700011008004300028020001500071050001000086245005700096260002800153300000700181500007100188650001800259999001500277000001519920251012174537.0        s1981    uk                  eng c  a086010266100aTN80010aCoal utilisation : technology, economics and policy   bGraham & Trotmanc1981   ap.  aL. Grainger and J. Gibson 503p. ill. 24cm Bibliography: p.489-496  0aCoal reserves  c5775d5775