LEADER 01923oam 2200541I 450 001 9910703654903321 005 20200601111821.0 035 $a(CKB)5470000002433162 035 $a(OCoLC)915347790 035 $a(EXLCZ)995470000002433162 100 $a20150803d2015 ua 0 101 0 $aeng 135 $aurcn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 14$aThe distribution of submersed aquatic vegetation and water lettuce in the fresh and oligohaline tidal Potomac River, 2007 /$fby Sarah Hunter Campbell, Nancy B. Rybicki, and Edward R. Schenk 210 1$aReston, Virginia :$cU.S. Department of the Interior, U.S. Geological Survey,$d2015. 215 $a1 online resource (vi, 33 pages) $ccolor maps 225 1 $aOpen-file report ;$v2014-1259 300 $aTitle from title screen (viewed on July 16, 2015). 320 $aIncludes bibliographical references (pages 6-7). 606 $aVegetation mapping$zPotomac River 606 $aAquatic plants$zPotomac River 606 $aWater lettuce$zPotomac River 606 $aAquatic plants$2fast 606 $aVegetation mapping$2fast 606 $aWater lettuce$2fast 607 $aUnited States$zPotomac River$2fast 615 0$aVegetation mapping 615 0$aAquatic plants 615 0$aWater lettuce 615 7$aAquatic plants. 615 7$aVegetation mapping. 615 7$aWater lettuce. 700 $aCampbell$b Sarah Hunter$01422281 702 $aRybicki$b Nancy B. 702 $aSchenk$b Edward R. 712 02$aGeological Survey (U.S.), 801 0$bGPO 801 1$bGPO 801 2$bOCLCF 801 2$bLWA 801 2$bGPO 906 $aBOOK 912 $a9910703654903321 996 $aThe distribution of submersed aquatic vegetation and water lettuce in the fresh and oligohaline tidal Potomac River, 2007$93546034 997 $aUNINA