49A.2  Publication of proposed public measure.
  Whenever any public measure has passed the general assembly which under the Constitution must be published and submitted to a vote of the entire people of the state, the state commissioner of elections shall cause the same to be published, once each month, in at least one newspaper of general circulation in each county in the state, for the time required by the Constitution.
[C24, 27, 31, 35, 39, §70; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §6.2]
C93, §49A.2

Time of publication, Iowa Constitution, Art. VII, §5 
Voting on public measures, see §49.43 – 49.50