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| 0000086521-18-000017-index.html | 2018-02-27 11:32:36 | |
| 0000086521-18-000017.txt | 2018-02-27 11:32:36 | |
| ex99_1x20171231.htm | 734825 | 2018-02-27 11:32:36 |
| ex99_2x20171231.htm | 369642 | 2018-02-27 11:32:36 |
| scg20180227form8k.htm | 36939 | 2018-02-27 11:32:36 |
 sempragraphic2.gif | 2095 | 2018-02-27 11:32:36 |