01750nam 2200409I 450 991070436750332120130204120327.0(CKB)5470000002440008(OCoLC)826638918(EXLCZ)99547000000244000820130204d2012 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierByproduct metals and rare-earth elements used in the production of light-emitting diodes overview of principal sources of supply and material requirements for selected markets /by David R. WilburnReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2012.1 online resource (iv, pages) color illustrationsScientific investigations report ;2012-5215Title from title screen (viewed on Feb. 4, 2012).Includes bibliographical references (pages 13-15).Byproduct metals and rare-earth elements used in the production of light-emitting diodes Light emitting diodesDesign and constructionLight emitting diodesMaterialsLight emitting diodesEnvironmental aspectsLight emitting diodesDesign and construction.Light emitting diodesMaterials.Light emitting diodesEnvironmental aspects.Wilburn D. R(David R.),1380879Geological Survey (U.S.),GPOGPOBOOK9910704367503321Byproduct metals and rare-earth elements used in the production of light-emitting diodes3544531UNINA