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100   $a20101115d1997      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/National Trends Network during 1994 /$fby John D. Gordon [and three others]
210  1$aDenver, Colorado :$cU.S. Geological Survey,$d1997.
215   $a1 online resource (v, 42 pages) $cillustrations, map
225 1 $aWater-resources investigations report ;$v97-4201
320   $aIncludes bibliographical references (pages 41-42).
606   $aAcid deposition$zUnited States$xTesting$xQuality control
606   $aAcid deposition$xTesting$2fast
607   $aUnited States$2fast
615  0$aAcid deposition$xTesting$xQuality control.
615  7$aAcid deposition$xTesting.
700   $aGordon$b J. D.$01383710
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
801  1$bOCLCE
801  2$bOCLCQ
801  2$bOCLCF
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801  2$bCOP
801  2$bGPO
906   $aBOOK
912   $a9910716575603321
996   $aExternal quality-assurance results for the National Atmospheric Deposition Program$93428903
997   $aUNINA