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| 0000080172-16-000059-index.html | 2016-08-01 16:03:28 | |
| 0000080172-16-000059.txt | 2016-08-01 16:03:28 | |
| npk-20160729x8k.htm | 38388 | 2016-08-01 16:03:28 |
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