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100   $a20101115d1997      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aEvaluation of nitrate sources using nitrogen-isotope techniques in shallow ground water within selected lake basins in the Central Lakes District, Polk and Highlands counties, Florida /$fby A.B. Tihansky and L.A. Sacks ; prepared in cooperation with the Florida Department of Environmental Protection
210  1$aTallahassee, Florida :$cU.S. Geological Survey,$d1997.
215   $a1 online resource (iv, 28 pages) $cillustrations, map
225 1 $aWater-resources investigations report ;$v97-4207
320   $aIncludes bibliographical references (pages 21-22).
606   $aGroundwater$xPollution$zFlorida$zPolk County
606   $aGroundwater$xPollution$zFlorida$zHighlands County
606   $aNitrates$xEnvironmental aspects$zFlorida$zPolk County
606   $aNitrates$xEnvironmental aspects$zFlorida$zHighlands County
606   $aBasins (Geology)$zFlorida$zPolk County
606   $aBasins (Geology)$zFlorida$zHighlands County
606   $aGroundwater$xPollution$2fast
606   $aNitrates$xEnvironmental aspects$2fast
607   $aFlorida$zHighlands County$2fast
607   $aFlorida$zPolk County$2fast
615  0$aGroundwater$xPollution
615  0$aGroundwater$xPollution
615  0$aNitrates$xEnvironmental aspects
615  0$aNitrates$xEnvironmental aspects
615  0$aBasins (Geology)
615  0$aBasins (Geology)
615  7$aGroundwater$xPollution.
615  7$aNitrates$xEnvironmental aspects.
700   $aTihansky$b A. B$g(Ann B.),$01404737
702   $aSacks$b Laura A.
712 02$aGeological Survey (U.S.),
712 02$aFlorida.$bDepartment of Environmental Protection.
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906   $aBOOK
912   $a9910716543403321
996   $aEvaluation of nitrate sources using nitrogen-isotope techniques in shallow ground water within selected lake basins in the Central Lakes District, Polk and Highlands counties, Florida$93481350
997   $aUNINA