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| 0000080172-15-000018-index.html | 2015-10-23 16:14:27 | |
| 0000080172-15-000018.txt | 2015-10-23 16:14:27 | |
| npk-20151020x8k.htm | 36497 | 2015-10-23 16:14:27 |
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