01156nam 2200349Ka 450 991069656850332120080417164136.0(CKB)5470000002379165(OCoLC)225190453(EXLCZ)99547000000237916520080417d2006 ua 0engtxtrdacontentcrdamediacrrdacarrierCertification programs for irrigation professionals[electronic resource][Washington, D.C.] :United States Environmental Protection Agency,[2006]1 sheet digital, PDF fileTitle from title screen (viewed Apr. 17, 2008)."October 2006.""EPA-832-F-06-017."Landscape irrigationUnited StatesWater in agricultureUnited StatesLandscape irrigationWater in agricultureUnited States.Environmental Protection Agency.GPOGPOBOOK9910696568503321Certification programs for irrigation professionals3150804UNINA