Reading, passage, and publication of ordinances--Incorporation by reference. The title of all ordinances each ordinance shall be read twice with at least five days intervening between the first and second reading. The ordinance shall be signed by the mayor or acting mayor or president of the Board of Trustees, filed with the auditor or clerk, and published once except that. However, an ordinance incorporating and adopting comprehensive regulations or a code promulgated, approved, and published by a recognized and established national organization prescribing building, electrical, plumbing, safety, fire, health, or milk regulations need not be published in a newspaper, but upon. Upon adoption of such an ordinance the auditor or clerk shall publish a notice of the fact of adoption once a week for two successive weeks in the official newspaper, and twenty. Thirty-five days after the completed publication of such the notice, unless the referendum shall have has been invoked, such the ordinance shall become becomes effective.