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035   $a(OCoLC)325208008
035   $a(EXLCZ)995470000002397404
100   $a20090518d2009      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aStatus and trends of resources below Glen Canyon Dam update, 2009$b[electronic resource] /$fJohn F. Hamill
210  1$a[Reston, Va.] :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2009.
215   $a1 online resource (4 unnumbered pages) $ccolor illustrations
225 1 $aUSGS fact sheet ;$v2009-3033
300   $aTitle from title screen (viewed on May 23, 2011).
320   $aIncludes bibliographical references (page [3]).
606   $aDams$xEnvironmental aspects$zColorado River (Colo.-Mexico)
606   $aDams$xEnvironmental aspects$zArizona$zGrand Canyon
607   $aGlen Canyon Dam (Ariz.)$xEnvironmental aspects
615  0$aDams$xEnvironmental aspects
615  0$aDams$xEnvironmental aspects
700   $aHamill$b John F$g(John Francis),$f1950-$01419649
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
801  2$bGPO
906   $aBOOK
912   $a9910698846203321
996   $aStatus and trends of resources below Glen Canyon Dam update, 2009$93534836
997   $aUNINA