01231nam 2200325Ka 450 991069451520332120050929140254.0(CKB)5470000002363542(OCoLC)61737413(EXLCZ)99547000000236354220050929d1998 ua 0engtxtrdacontentcrdamediacrrdacarrierBiological indicators of ground water-surface water interaction--an update[electronic resource][Washington, D.C.] :United States Environmental Protection Agency, Office of Ground Water and Drinking Water,[1998]Title from title screen (viewed on Sep. 29, 2005)."September 1998.""EPA 816-R-98-018."Includes bibliographical references.Drinking waterContaminationUnited StatesDrinking waterContaminationUnited States.Environmental Protection Agency.Office of Ground Water and Drinking Water.GPOGPOBOOK9910694515203321Biological indicators of ground water-surface water interaction--an update3205264UNINA