North Carolina Administrative Code Title 17 — Revenue 17 NCAC 04D .0806 — Continuous Use Of Method Last amended: Authority G.S. 105-113.45; 105-113.48; 105-113.56B; 105-113.57; 105-113.63; 105-113-.66; Eff. February 1, 1976; Amended Eff. June 11, 1977; Repealed Eff. October 1, 1991. Source: official text