Ambient water quality criteria recommendations [electronic resource] : information supporting the development of state and tribal nutrient criteria for rivers and streams in nutrient ecoregion XI : the central and eastern forested uplands including all or parts of the states of Pennsylvania ... and the tribes within the ecoregion.
Imprint
Washington, D.C. : U.S. Environmental Protection Agency, Office of Water : Office of Science and Technology, Health and Ecological Criteria Division, [2000]
