LEADER 01818nam 2200457 a 450 001 9910699631903321 005 20110210110035.0 035 $a(CKB)5470000002404619 035 $a(OCoLC)701316719 035 $a(EXLCZ)995470000002404619 100 $a20110210d2010 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aApproaches for estimating critical loads of nitrogen and sulfur deposition for forest ecosystems on U.S. federal lands$b[electronic resource] /$fLinda H. Pardo 210 1$aNewtown Square, PA :$cU.S. Dept. of Agriculture, Forest Service, Northern Research Station,$d[2010] 215 $a1 online resource (25 pages) $cillustrations 225 1 $aGeneral technical report NRS ;$v71 300 $aTitle from title screen (viewed on Feb. 10, 2011). 300 $a"September 2010"--P. [2] of cover. 320 $aIncludes bibliographical references (pages 20-25). 606 $aAtmospheric deposition$zUnited States$xMeasurement 606 $aNitrogen$zUnited States$xMeasurement 606 $aSulfur$zUnited States$xMeasurement 606 $aForest ecology$zUnited States 606 $aBiotic communities$zUnited States 615 0$aAtmospheric deposition$xMeasurement. 615 0$aNitrogen$xMeasurement. 615 0$aSulfur$xMeasurement. 615 0$aForest ecology 615 0$aBiotic communities 700 $aPardo$b Linda H$01405448 712 02$aUnited States.$bForest Service.$bNorthern Research Station. 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910699631903321 996 $aApproaches for estimating critical loads of nitrogen and sulfur deposition for forest ecosystems on U.S. federal lands$93540080 997 $aUNINA