LEADER 01645nam  2200385 a 450 
001 9910702256503321
005 20121114121708.0
035   $a(CKB)5470000002425583
035   $a(OCoLC)817953527
035   $a(EXLCZ)995470000002425583
100   $a20121114d2012      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 12$aA benthic-macroinvertebrate index of biotic integrity and assessment of conditions in selected streams in Chester County, Pennsylvania, 1998-2009$b[electronic resource] /$fby Andrew G. Reif ; prepared in cooperation with the Chester County Water Resources Authority
210  1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2012.
215   $a1 online resource (viii, 41 pages) $cillustrations (some color), color maps
225 1 $aScientific investigations report ;$v2011-5116
300   $aTitle from title screen (viewed on Nov. 14, 2012).
320   $aIncludes bibliographical references (pages 36-38).
606   $aWater quality$zPennsylvania$zChester County
606   $aBenthos$zPennsylvania$zChester County
615  0$aWater quality
615  0$aBenthos
700   $aReif$b Andrew G$01397983
712 02$aChester County Water Resources Authority.
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910702256503321
996   $aA benthic-macroinvertebrate index of biotic integrity and assessment of conditions in selected streams in Chester County, Pennsylvania, 1998-2009$93517908
997   $aUNINA