Versions of Iowa Code 135D.6 - Board of directors -- composition -- duties on LawServer 2023 Iowa Code 135D.6 – Board of directors — composition — duties 2022 Iowa Code 135D.6 – Board of directors — composition — duties. 2020 Iowa Code 135D.6 – Board of directors — composition — duties. 2018 Iowa Code 135D.6 – Board of directors — composition — duties.