The natural communities of Virginia: classification of ecological community groups. Second approximation
VB.Rf.37947.2004VANATURALHE
Fleming, G.P., P.P. Coulling, K.D. Patterson, and K.M. McCoy. 2004. The natural communities of Virginia: classification of ecological community groups. Second approximation. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond, VA. <http://www.dcr.virginia.gov/dnh/ncintro.htm.>