Any irrigation district organized under the laws of the state of Colorado in which bonds have been issued and in which said bonds were not registered as required by law, and the whereabouts of the bondholders is unknown, and more than twenty years has elapsed since the maturity date of the last issue of said bonds in said district may be dissolved as provided in sections 37-43-179 to 37-43-182.L. 51: p. 519, § 1. CSA: C. 90, § 555(12). CRS 53: § 149-3-78. C.R.S. 1963: § 150-3-78.