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| 0000757011-17-000070-index.html | 2017-11-14 16:26:58 | |
| 0000757011-17-000070.txt | 2017-11-14 16:26:58 | |
| form8-k_11142017.htm | 25967 | 2017-11-14 16:26:58 |
| usg_ex31x11102017x8-k.htm | 150432 | 2017-11-14 16:26:58 |
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