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| 0000912562-20-000007-index.html | 2020-02-28 14:08:42 | |
| 0000912562-20-000007.txt | 2020-02-28 14:08:42 | |
 0000912562-20-000007-xbrl.zip | 491004 | 2020-02-28 14:08:42 |
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| ex31certofincorpandame.htm | 87095 | 2020-02-28 14:08:42 |
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| report.css | 2768 | 2020-02-28 14:08:42 |
| rock-20191231.xsd | 82435 | 2020-02-28 14:08:42 |
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| Show.js | 1086 | 2020-02-28 14:08:42 |
 stockgrapha01.jpg | 64903 | 2020-02-28 14:08:42 |