01019cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040004600111042001200157050001700169100002800186245006000214260003300274300004100307490014500348500015400493504005200647650001000699710003900709999001700748gs 21000054 DLC20260227111325.0791108s1920    enkab         000 0 eng c  ags 21000054   a(OCoLC)5664986  aLibrary, U.S. Geological SurveycOCldDLC  apremarc00aTN808.G6bR71 aRonaldson, James Henry.00aCoal,cby J. H. Ronaldson, with 12 maps and 2 diagrams.  aLondon,bJohn Murray,c1920.  aix, 1, 166 p.bmaps, tables.c22 cm.0 aGreat Britain. Imperial institute. Mineral resources committee. Monograph on mineral resources, with special reference to the British Empire  aPrepared under the direction of the Mineral resources committee of the Imperial institute, with the assistance of the scientific and technical staff.  a"References to literature on coal": p. 160-166. 0aCoal.2 aImperial Institute (Great Britain)  c26066d26066