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| 0000897101-11-001421-index.html | 2011-08-12 16:03:21 | |
| 0000897101-11-001421.txt | 2011-08-12 16:03:21 | |
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| FilingSummary.xml | 7936 | 2011-08-12 16:03:21 |
| Financial_Report.xls | 273003 | 2011-08-12 16:03:21 |
| npk-20110703.xml | 281637 | 2011-08-12 16:03:21 |
| npk-20110703.xsd | 9356 | 2011-08-12 16:03:21 |
| npk-20110703_cal.xml | 28646 | 2011-08-12 16:03:21 |
| npk-20110703_lab.xml | 90908 | 2011-08-12 16:03:21 |
| npk-20110703_pre.xml | 60676 | 2011-08-12 16:03:21 |
| presto113760_10q.htm | 236449 | 2011-08-12 16:03:21 |
| presto113760_ex11.htm | 17758 | 2011-08-12 16:03:21 |
| presto113760_ex31-1.htm | 8807 | 2011-08-12 16:03:21 |
| presto113760_ex31-2.htm | 8808 | 2011-08-12 16:03:21 |
| presto113760_ex32-1.htm | 2212 | 2011-08-12 16:03:21 |
| presto113760_ex32-2.htm | 2209 | 2011-08-12 16:03:21 |
| R1.htm | 25330 | 2011-08-12 16:03:21 |
| R10.htm | 82481 | 2011-08-12 16:03:21 |
| R11.htm | 7864 | 2011-08-12 16:03:21 |
| R12.htm | 10511 | 2011-08-12 16:03:21 |
| R13.htm | 16480 | 2011-08-12 16:03:21 |
| R14.htm | 14218 | 2011-08-12 16:03:21 |
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| R4.htm | 61546 | 2011-08-12 16:03:21 |
| R5.htm | 89719 | 2011-08-12 16:03:21 |
| R6.htm | 7403 | 2011-08-12 16:03:21 |
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| R8.htm | 146121 | 2011-08-12 16:03:21 |
| R9.htm | 13748 | 2011-08-12 16:03:21 |
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