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| 0000067716-22-000048.txt | 2022-08-04 07:32:43 | |
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| mdu-20220804.xsd | 2150 | 2022-08-04 07:32:43 |
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| mdu-20220804_htm.xml | 11301 | 2022-08-04 07:32:43 |
| mdu-20220804_lab.xml | 28856 | 2022-08-04 07:32:43 |
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