444.8  Mandatory provisions.
  The provisions of sections 444.1 to 444.7, and the methods of computation, certification, and levy therein provided shall be obligatory on all officers within the several counties of the state upon whom devolves the duty of determining, certifying, and levying taxes.
[C24, 27, 31, 35, 39, §7170; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §444.8]