Level III and IV ecoregions of delaware, maryland, pennsylvania, virginia, and west virginia by
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(eds.), North American Terrestrial Vegetation: Cambridge, Cambridge University Press, p. 287-316. Griffith, G.E., Omernik, J.M., and Azevedo, S.H., 1997, Ecoregions of Tennessee: Corvallis, Oregon, U.S. Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, EPA/600/R-97/022, 51 p. Griffith, G.E., Omernik, J.M., and Azevedo, S.H., 1998, Ecoregions of Tennessee (map and poster): Reston , Virginia, US Geological Survey, map scale 1:940,000. Griffith, G.E., Omernik, J.M., Wilton, T.F., and Pierson, S.M., 1994a, Ecoregions and subregions of Iowa -- a framework for water quality assessment and management: Journal of the Iowa Academy of Science, v. 101, no. 1, p. 5-13. Griffith, G.E., Omernik, J.M., Rohm, C.M., and Pierson, S.M., 1994b, Florida Regionalization Project: Corvallis, Oregon, U.S. Environmental Protection Agency, Environmental Research Laboratory, EPA/Q-95/002. Griffith, G.E., Omernik, J.M., Pierson, S.P., and Kiilsgaard, C.W., 1994c, Massachusetts Ecological Regions Project. Corvallis, Oregon: U.S. Environmental Protection Agency, Environmental Research Laboratory, EPA/600/A-94/111. Guilday, J.E., 1985, The physiographic provinces of Pennsylvania, in Genoways, H.H., and Brenner, F.J. (eds.), Species of special concern in Pennsylvania: Pittsburgh: Carnegie Museum of Natural History, Special Publication of Carnegie Museum of Natural History No. 11, p. 19-29. Directory: EPADataCommons -> ORD -> Ecoregions Ecoregions -> Ecoregions of north carolina Ecoregions -> Ecoregions of south carolina Ecoregions -> Level II ecoregions of the Conterminous United States Ecoregions -> Georgia Ecoregion Descriptions August, 2001 45. Piedmont Ecoregions -> Primary distinguishing characteristics of level III ecoregions of the continental united states Ecoregions -> Alabama Ecoregion Descriptions August, 2001 45. Piedmont Download 434.51 Kb. 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