00985nam0-2200325---450-99000027535040332120091204170345.0000027535FED01000027535(Aleph)000027535FED0100002753520020821d1978----km-y0itay50------baitaITy-------001yy<<Una >>raccolta di programmi per la risoluzione di problemi ellittici mediante il metodo degli elementi finitiL. Beretta, A. Di Monaco, G. GiuseppettiRomaENEL197834 p.30 cmRelazione di studio e ricercaENEL347665Beretta,L.Di Monaco,AntonioGiuseppetti,GabriellaENEL<Ente nazionale per l'energia elettrica>ITUNINARICAUNIMARCBK99000027535040332104 007-2/347CIDINCHDINCHUNINA01871oam 2200457Ia 450 991069618170332120070906142147.0(CKB)5470000002374991(OCoLC)69233194(EXLCZ)99547000000237499120060524d2006 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAnnual dissolved nitrite plus nitrate and total phosphorous loads for the Susquehanna, St. Lawrence, Mississippi-Atchafalaya, and Columbia River basins, 1968-2004[electronic resource] /by Brent T. AulenbachReston, Va. :U.S. Geological Survey,2006.iii, 12 pages digital, PDF fileOpen-file report ;2006-1087At head of title on HTML title screen: Georgia Water Science Center.Title from PDF title screen (viewed on May 23, 2006).Includes bibliographical references (page 12).NitritesEnvironmental aspectsUnited StatesNitratesEnvironmental aspectsUnited StatesPhosphorusEnvironmental aspectsUnited StatesWaterPollutionUnited StatesNitritesEnvironmental aspectsNitratesEnvironmental aspectsPhosphorusEnvironmental aspectsWaterPollutionAulenbach Brent T1382734Geological Survey (U.S.)USGS Georgia Water Science Center.GISGISGPOBOOK9910696181703321Annual dissolved nitrite plus nitrate and total phosphorous loads for the Susquehanna, St. Lawrence, Mississippi-Atchafalaya, and Columbia River basins, 1968-20043509693UNINA