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035   $a(CKB)5470000002510085
035   $a(OCoLC)1110171977$z(OCoLC)974646613
035   $a(OCoLC)995470000002510085
035   $a(EXLCZ)995470000002510085
100   $a20190725d1989      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aStability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey /$fby Timothy C. Willoughby, Randolph B. See, and LeRoy J. Schroder
210  1$aDenver, Colorado :$cU.S. Geological Survey,$d1989.
215   $a1 electronic resource (v, 15 pages) $cillustrations
225 1 $aWater-resources investigations report ;$v89-4042
320   $aIncludes bibliographical references (page 15).
606   $aAcid deposition$xSampling$zUnited States
606   $aAcid deposition$xSampling$xQuality control
606   $aNitrification$xTesting
606   $aAcid deposition$2fast
606   $aNitrification$2fast
607   $aUnited States$2fast
615  0$aAcid deposition$xSampling
615  0$aAcid deposition$xSampling$xQuality control.
615  0$aNitrification$xTesting.
615  7$aAcid deposition.
615  7$aNitrification.
700   $aWilloughby$b Timothy C.$01396388
702   $aSee$b Randolph B.
702   $aSchroder$b L. J.
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
801  1$bOCLCE
801  2$bCOP
801  2$bOCLCF
801  2$bUND
801  2$bGPO
906   $aBOOK
912   $a9910715394503321
996   $aStability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey$93456410
997   $aUNINA