On lands which are a part of any national forest, Indian reservation, or other national reserve or public domain of the United States, or of any state reservation, or of any unoccupied or leased state lands, the control of such rodent pests shall be carried on so far as possible at the expense of the federal government on federal lands and at the expense of the state government on unoccupied or leased state lands with such cooperation with occupants, lessees, licensees, or adjacent landowners as may be available.
Source: L. 27: p. 618, § 5. CSA: C. 5, § 49. CRS 53: § 6-7-6. C.R.S. 1963: § 6-7-6.