Iowa Code § 468.57
85 Acts, ch 163, §2; 86 Acts, ch 1099, §1; 89 Acts, ch 126, §2 92 Acts, ch 1016, §37; 94 Acts, ch 1035, §2; 95 Acts, ch 57, §24; 97 Acts, ch 121, §26; 2011 Acts, ch 25, §143 ; 2011 Acts, ch 109, §4; 2012 Acts, ch 1138, §107
Referred to in §468.55, 468.59, 468.127