01923oam 2200541I 450 991070365490332120200601111821.0(CKB)5470000002433162(OCoLC)915347790(EXLCZ)99547000000243316220150803d2015 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierThe distribution of submersed aquatic vegetation and water lettuce in the fresh and oligohaline tidal Potomac River, 2007 /by Sarah Hunter Campbell, Nancy B. Rybicki, and Edward R. SchenkReston, Virginia :U.S. Department of the Interior, U.S. Geological Survey,2015.1 online resource (vi, 33 pages) color mapsOpen-file report ;2014-1259Title from title screen (viewed on July 16, 2015).Includes bibliographical references (pages 6-7).Vegetation mappingPotomac RiverAquatic plantsPotomac RiverWater lettucePotomac RiverAquatic plantsfastVegetation mappingfastWater lettucefastUnited StatesPotomac RiverfastVegetation mappingAquatic plantsWater lettuceAquatic plants.Vegetation mapping.Water lettuce.Campbell Sarah Hunter1422281Rybicki Nancy B.Schenk Edward R.Geological Survey (U.S.),GPOGPOOCLCFLWAGPOBOOK9910703654903321The distribution of submersed aquatic vegetation and water lettuce in the fresh and oligohaline tidal Potomac River, 20073546034UNINA