Section 20(1)(d): substituted, on 25 November 1994, by section 8(1) of the Conservation Amendment Act 1994 (1994 No 108).
Section 20(2)(a): amended, on 10 April 1990, by section 14 of the Conservation Law Reform Act 1990 (1990 No 31).
Section 20(3): substituted, on 25 November 1994, by section 8(2) of the Conservation Amendment Act 1994 (1994 No 108).