Versions of North Dakota Code 57-51-01 - Definitions on LawServer 2023 North Dakota Code 57-51-01 – Definitions 2022 North Dakota Code 57-51-01 – Definitions 2021 North Dakota Code 57-51-01 – Definitions 2019 North Dakota Code 57-51-01 – Definitions 2016 North Dakota Code 57-51-01 – Definitions 2014 North Dakota Code 57-51-01 – (Effective for taxable events occurring through June 30, 2015) Definitions 2009 North Dakota Code 57-51-01 – Definitions