LEADER 01562nam  2200397I  450 
001 9910703577603321
005 20150129115641.0
035   $a(CKB)5470000002431922
035   $a(OCoLC)900973603
035   $a(EXLCZ)995470000002431922
100   $a20150129d1999      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $2rdacontent
182   $2rdamedia
183   $2rdacarrier
200 10$aDistribution and abundance of submersed aquatic vegetation in the tidal Potomac River and upper Potomac Estuary, Maryland, Virginia, and the District of Columbia, 1993-1998 /$fby Henry A. Ruhl [and three others]
210  1$aReston, Virginia :$cU.S. Geological Survey,$d1999.
215   $a1 online resource (iv, 39 pages) $cillustrations
225 1 $aU.S. Geological Survey open-file report ;$v99-233
300   $aTitle from title screen (viewed on Jan. 26, 2015).
320   $aIncludes bibliographical references (pages 4-5).
606   $aAquatic plants$zPotomac River
606   $aWater quality$zPotomac River
607   $aPotomac River
607   $aPotomac River Estuary
615  0$aAquatic plants
615  0$aWater quality
700   $aRuhl$b H. A$g(Henry A.),$01405561
712 02$aGeological Survey (U.S.),
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910703577603321
996   $aDistribution and abundance of submersed aquatic vegetation in the tidal Potomac River and upper Potomac Estuary, Maryland, Virginia, and the District of Columbia, 1993-1998$93482384
997   $aUNINA