00842nam0-2200301---450-99000980585040332120140108121656.0000980585FED01000980585(Aleph)000980585FED0100098058520140108d1920----km-y0itay50------baengGBa-------001yyCoalby J. H. RonaldsonLondonJohn Murray1920IX, 166 p.ill.22 cmImperial Institute monographs on mineral resourceswith special reference to the british empireMineralogiaRonaldson,j. H.521744ITUNINARICAUNIMARCBK990009805850403321P 1/13506/940DINGEDINGECoal837393UNINA