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100   $a20101106d1989      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aExternal quality-assurance results for the National Atmospheric Deposition Program and the National Trends Network during 1987 /$fby Randolph B. See, LeRoy J. Schroder, and Timothy C. Willoughby
210  1$aDenver, Colorado :$cU.S. Geological Survey,$d1989.
215   $a1 online resource (iv, 16 pages) $cillustrations
225 1 $aWater-resources investigations report ;$v89-4015
320   $aIncludes bibliographical references (pages 15-16).
606   $aQuality assurance
606   $aAcid deposition$zUnited States$xTesting
606   $aAcid deposition$xTesting$2fast
607   $aUnited States$2fast
615  0$aQuality assurance.
615  0$aAcid deposition$xTesting.
615  7$aAcid deposition$xTesting.
700   $aSee$b Randolph B.$01387376
702   $aSchroder$b L. J.
702   $aWilloughby$b Timothy C.
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
801  1$bOCLCE
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801  2$bOCLCF
801  2$bOCLCQ
801  2$bOCLCO
801  2$bOCLCQ
801  2$bCOP
801  2$bGPO
906   $aBOOK
912   $a9910715206503321
996   $aExternal quality-assurance results for the National Atmospheric Deposition Program and the National Trends Network during 1987$93480935
997   $aUNINA