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100   $a20121126d2012      ua             0
101 0 $aeng
135   $aurcn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aCounty-level estimates of nitrogen and phosphorus from commercial fertilizer for the conterminous United States, 1987-2006$b[electronic resource] /$fby Jo Ann M. Gronberg and Norman E. Spahr
210  1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2012.
215   $a1 online resource (vi, 20 pages) $ccolor illustrations
225 1 $aScientific investigations report ;$v2012-5207
300   $aTitle from title screen (viewed on Nov. 26, 2012).
300   $a"National Water-Quality Assessment Program."
320   $aIncludes bibliographical references (pages 17-18).
606   $aNitrogen fertilizers$zUnited States
606   $aPhosphatic fertilizers$zUnited States
615  0$aNitrogen fertilizers
615  0$aPhosphatic fertilizers
700   $aGronberg$b JoAnn M$01384896
701   $aSpahr$b Norman E$01384575
712 02$aGeological Survey (U.S.)
712 02$aNational Water-Quality Assessment Program (U.S.)
801  0$bAZS
801  1$bAZS
801  2$bGPO
906   $aBOOK
912   $a9910702450203321
996   $aCounty-level estimates of nitrogen and phosphorus from commercial fertilizer for the conterminous United States, 1987-2006$93526904
997   $aUNINA