Versions of Iowa Code 309.36 - Nature of survey on LawServer 2024 Iowa Code 309.36 – Nature of survey 2023 Iowa Code 309.36 – Nature of survey 2022 Iowa Code 309.36 – Nature of survey 2020 Iowa Code 309.36 – Nature of survey 2018 Iowa Code 309.36 – Nature of survey 2016 Iowa Code 309.36 – Nature of survey 2014 Iowa Code 309.36 – Nature of survey. 2009 Iowa Code 309.36 – Nature of survey