Mo. Rev. Stat. § 67.910
Sections 67.870 to 67.910 not to apply to second class counties having more ...
67.910. Sections 67.870 to 67.910 not to apply to second class counties having more than 100,000 and less than 110,000 inhabitants. — Any other provision of sections 67.870 to 67.910 to the contrary notwithstanding, the provisions hereof shall not apply to counties of the second class having a population of more than one hundred thousand and less than one hundred ten thousand inhabitants.
(L. 1971 H.B. 570 § 9)