00742cam a2200253   45000010008000000030008000080050017000160080041000330100017000740150015000910350023001060350017001290400037001460500015001830820019001981000029002172450066002462600032003123000035003445040051003796500010004306500017004406500031004572283636BD-DhUL20141113100951.0770103s1954    enka          000 0 eng    a   54039472   aGB54-10018  a(OCoLC)ocm02657723  a(NNC)2283636  aDLCcYDMdUKMdUBAdZCUdBD-DhUL0 aTN800b.F704a553.2218bFRC1 aFrancis, Wilfrid,d1899-00aCoal :bits formation and composition /cby  Wilfrid Francis.  aLondon :bE. Arnold,c1961.  aviii, 567 p. :bill. ;c24 cm.  aIncludes bibliographical references and index. 0aCoal. 0aPaleobotany. 7aCarvao (Geologia)2larpcal