Cover title.; "September 2004"--Cover.; "Funding provided by the North Carolina Natural Heritage Trust Fund and the United States Fish and Wildlife Service"--Cover.; Includes bibliographical references (p. 48-49).
Cover title.; "December 2006."; Supplemented by : Written public comments on the La Capra Associates, Inc. study: Analysis of a renewable portfolio standard for the state of North Carolina.; Includes bibliographical references.