Show RECENT publications fortieth annual report of the director of the united states geological survey to the secretary of the interior for the fiscal year ending june 30 1919 professional paper the copper deposits of ray and miami arizona by F L ransome pages 54 plates 29 text figures bulletin bibliography of the metals of the platinum group osmium platinum palladium iridium rhodium ruthenium 1748 1917 by jas lewis howe and H C holtz pages bulletin the porcupine gold placer district alaska by H M eakin 28 pages 8 plates bulletin the analysis of silicate and carbonate rocks by W F hillebrand pages bulletin C deposits of manganese ore in costa rica and panama papers by J D sears 35 pages I 1 plate 28 text figures bulletin E deposits of manganese ore in southern california by E L jones jr 26 pages I 1 plate bulletin D preliminary report on the of kenai peninsula alaska by A C gill 33 pages 3 plates |