Tex. Parks & Wild. Code § 31.036
Acts 1975, 64th Leg., p. 1405, ch. 545, Sec. 1, eff. Sept. 1, 1975.
Amended by Acts 1977, 65th Leg., p. 1253, ch. 484, Sec. 1(c), eff. Sept. 1, 1977;
Acts 1993, 73rd Leg., ch. 450, Sec. 11, eff. Sept. 1, 1993.