00603cam a22002414a 450000100060000000300110000600500170001700800410003404000270007504100080010204400080011008000100011810000170012824500360014526000520018130000270023365000180026065000140027865000220029265500100031470000190032470000180034338084AR-SsjUBGM20251206163045.0250720s1943    xxu           000 0 eng d  aAR-SsjUBGMcAR-SsjUBGM0 aeng  axxu  a338.21 aLeith, C. K.10aWorld minerals and world peace.  aWashington :bThe Brookings Institution,c1943.  a253 p. :bil. ;c23 cm 4aMineralogía 4aMinerales 4aPolítica minera 4aLibro1 aFurness, J. W.1 aLewis, Cleona