00774nam0-22003011i-450-990001083980403321000108398FED01000108398(Aleph)000108398FED0100010839820000920d1973----km-y0itay50------baengCorso di AstronomiaMargherita HackTriesteOsservatorio Astronomico1973AstronomiaAstrofisicaCosmologia520523Hack,Margherita<1922- >47486ITUNINARICAUNIMARCBK99000108398040332119-168.00115553FI1FI1Corso di astronomia95285UNINAING0101492oam 2200409Ia 450 991069934330332120230902161849.0(CKB)5470000002402484(OCoLC)143608477(EXLCZ)99547000000240248420070612d2007 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierWater[electronic resource] critical infrastructure and key resources sector-specific plan as input to the National Infrastructure Protection Plan[Washington, D.C.] :U.S. Dept. of Homeland Security :U.S. Environmental Protection Agency,[2007]1 online resource (ix, 120 pages) color illustrationsTitle from title screen (viewed on June 12, 2007)"May 2007""EPA 817-R-07-001A."Water Drinking waterSecurity measuresUnited StatesWater utilitiesSecurity measuresUnited StatesNational Infrastructure Protection Plan (U.S.)Drinking waterSecurity measuresWater utilitiesSecurity measuresUnited States.Department of Homeland Security.United States.Environmental Protection Agency.EJBEJBGPOBOOK9910699343303321Water2153714UNINA