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| 0000016868-21-000018-index.html | 2021-04-26 16:20:38 | |
| 0000016868-21-000018.txt | 2021-04-26 16:20:38 | |
| a2021q16k.htm | 22888 | 2021-04-26 16:20:38 |
| a2021q1ceocfocertificates.htm | 19303 | 2021-04-26 16:20:38 |
| a2021q1fsnotes.htm | 577258 | 2021-04-26 16:20:38 |
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| a2021q1pressreleasestatssu.htm | 268545 | 2021-04-26 16:20:38 |
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