2023 North Dakota Code 15-05-11 – Improvements defined

2022 North Dakota Code 15-05-11 – Improvements defined

2021 North Dakota Code 15-05-11 – Improvements defined

2019 North Dakota Code 15-05-11 – Improvements defined

2016 North Dakota Code 15-05-11 – Improvements defined

2014 North Dakota Code 15-05-11 – Improvements defined

2009 North Dakota Code 15-05-11 – Improvements defined