LEADER 01510nam  2200397 a 450 
001 9910701069603321
005 20120103091307.0
035   $a(CKB)5470000002414339
035   $a(OCoLC)770008418
035   $a(EXLCZ)995470000002414339
100   $a20120103d2011      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aNitrogen in agricultural systems$b[electronic resource] $eimplications for conservation policy /$fMarc Ribaudo ... [and others]
210  1$a[Washington, D.C.] :$cU.S. Dept. of Agriculture, Economic Research Service,$d[2011]
215   $a1 online resource (v, 82) pages $ccolor illustrations
225 1 $aEconomic research report ;$vno. 127
300   $aTitle from PDF title screen (viewed Dec. 29, 2011).
300   $a"September 2011."
320   $aIncludes bibliographical references (pages 51-62).
517   $aNitrogen in agricultural systems 
606   $aNitrogen fertilizers$xEnvironmental aspects$zUnited States
606   $aAgricultural conservation$zUnited States
615  0$aNitrogen fertilizers$xEnvironmental aspects
615  0$aAgricultural conservation
701   $aRibaudo$b Marc$01390140
712 02$aUnited States.$bDepartment of Agriculture.$bEconomic Research Service.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910701069603321
996   $aNitrogen in agricultural systems$93464520
997   $aUNINA