The director of revenue shall from time to time prepare and certify to each assessor such instructions as to a uniform method of making up the assessment rolls as the director of revenue thinks necessary to secure a compliance with the law and uniform returns, which shall be printed upon each assessment roll, and also prepare instructions for the same purpose as to making up the assessment book, which shall be printed therein.
Iowa Code § 441.27
2003 Acts, ch 145, § 286