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100   $a20190201d1991      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aSummary of the National Atmospheric Deposition Program/National Trends Network intersite-comparison program, November 1978-November 1989 /$fby John D. Gordon, Timothy C. Willoughby, and LeRoy J. Schroder
210  1$aDenver, Colorado :$cU.S. Geological Survey,$d1991.
215   $a1 online resource (iv, 26 pages) $cillustrations
225 1 $aWater-resources investigations report ;$v91-4061
320   $aIncludes bibliographical references (pages 25-26).
606   $aAcid precipitation (Meteorology)$zUnited States$xMeasurement
606   $aAcid deposition$zUnited States$xTesting
606   $aWater quality$zUnited States
606   $aAcid deposition$xTesting$2fast
606   $aAcid precipitation (Meteorology)$xMeasurement$2fast
606   $aWater quality$2fast
607   $aUnited States$2fast
615  0$aAcid precipitation (Meteorology)$xMeasurement.
615  0$aAcid deposition$xTesting.
615  0$aWater quality
615  7$aAcid deposition$xTesting.
615  7$aAcid precipitation (Meteorology)$xMeasurement.
615  7$aWater quality.
700   $aGordon$b J. D.$01383710
702   $aWilloughby$b Timothy C.
702   $aSchroder$b L. J.
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
801  1$bOCLCE
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801  2$bGPO
906   $aBOOK
912   $a9910715305303321
996   $aSummary of the National Atmospheric Deposition Program$93483833
997   $aUNINA