Versions of Iowa Code 633B.201 - Authority -- specific and general on LawServer 2024 Iowa Code 633B.201 – Authority — specific and general 2023 Iowa Code 633B.201 – Authority — specific and general 2022 Iowa Code 633B.201 – Authority — specific and general. 2020 Iowa Code 633B.201 – Authority — specific and general. 2018 Iowa Code 633B.201 – Authority — specific and general. 2016 Iowa Code 633B.201 – Authority