01977oam 2200565 450 991071351990332120200603100252.0(CKB)5470000002502468(OCoLC)966434566(OCoLC)995470000002502468(EXLCZ)99547000000250246820161219d1988 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierHydrology and water quality of the principal springs in Puerto Rico /by Senén Guzmán-RiosSan Juan, Puerto Rico :U.S. Geological Survey,1988.1 online resource (v, 30 pages) illustrations, mapsWater-resources investigations report ;85-4269"Prepared in cooperation with the Puerto Rico Department of Natural Resources and the Water Resources Research Institute of the University of Puerto Rico (Mayaguez Campus)."Includes bibliographical references (pages 30).HydrologyPuerto RicoSpringsPuerto RicoWater qualityPuerto RicoStream measurementsfastWater qualityfastPuerto RicofastHydrologySpringsWater qualityStream measurements.Water quality.Guzmán-Ríos Senén1414495Geological Survey (U.S.),Puerto Rico.Department of Natural Resources.University of Puerto Rico (Mayagüez Campus).Water Resources Research Institute.COPCOPOCLCOCOPOCLCOOCLCFOCLCAGPOBOOK9910713519903321Hydrology and water quality of the principal springs in Puerto Rico3520483UNINA01490nam 2200397Ia 450 991069713390332120230902161733.0(CKB)5470000002385575(OCoLC)644562376(EXLCZ)99547000000238557520100629d2009 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierSelenium recycling in the United States in 2004[electronic resource] /by Micheal W. George and Lorie A. WagnerReston, Va. :U.S. Dept. of the Interior, U.S. Geological Survey,[2009]1 online resource (vi, X30 pages) illustrationsU.S. Geological Survey circular ;1196-TFlow studies for recycling metal commodities in the United StatesTitle from PDF title screen (USGS, viewed June 25, 2010).Includes bibliographical references.U.S. Geological Survey circular ;1196-T.Flow studies for recycling metal commodities in the United States.SeleniumRecyclingUnited StatesSeleniumRecyclingGeorge Micheal W1390035Wagner Lorie A1380765Geological Survey (U.S.)GPOGPOBOOK9910697133903321Selenium recycling in the United States in 20043442302UNINA