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0000790715-08-000003-index-headers.html | 2008-06-27 09:02:59 | |
0000790715-08-000003-index.html | 2008-06-27 09:02:59 | |
0000790715-08-000003.txt | 2008-06-27 09:02:59 | |
sigma_8k.htm | 36058 | 2008-06-27 09:02:59 |
sigm_8k-ex9901.htm | 98612 | 2008-06-27 09:02:59 |