Tex. Tax Code § 152.022
Acts 1981, 67th Leg., p. 1588, ch. 389, Sec. 1, eff. Jan. 1, 1982.
Amended by Acts 1984, 68th Leg., 2nd C.S., ch. 31, art. 1, Sec. 7, eff. Aug. 1, 1984;
Acts 1987, 70th Leg., 2nd C.S., ch. 5, art. 6, Sec. 2;
Acts 1991, 72nd Leg., 1st C.S., ch. 5, Sec. 16.03, eff. Sept. 1, 1991.