00553cam a22002054a 450000100060000000300110000600500170001700800410003404000270007504100080010204400080011008000110011810000220012924500820015126000310023330000270026465000270029165000190031865500100033736660AR-SsjUBGM20251206161952.0250720s1919 xxk 000 0 eng d aAR-SsjUBGMcAR-SsjUBGM0 aeng axxk a553.451 aDavies, George M.10aMonographs on mineral resources with special reference to the British Empire. aLondon :bJ.Murray,c1919. a109 p. :bil. ;c22 cm 4aGeología económica 4aRecurso minero 4aLibro