"Regional planning commission" defined

For the purposes of this part, "regional planning commission" means any regional planning commission established by the [former] state planning office as authorized by law, and includes any municipal planning commission designated by the state planning office, as authorized by law, as the regional planning commission of a planning region composed of the territory of a single municipality, together with territory adjoining but outside of such municipality. Acts 1935, ch. 33, § 10; C. Supp. 1950, § 10268.10; impl. am. Acts 1972, ch. 542, § 15; T.C.A. (orig. ed.), § 13-413. For the purposes of this part, "regional planning commission" means any regional planning commission established by the [former] state planning office as authorized by law, and includes any municipal planning commission designated by the state planning office, as authorized by law, as the regional planning commission of a planning region composed of the territory of a single municipality, together with territory adjoining but outside of such municipality. Acts 1935, ch. 33, § 10; C. Supp. 1950, § 10268.10; impl. am. Acts 1972, ch. 542, § 15; T.C.A. (orig. ed.), § 13-413.