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| 0000929940-18-000015-index.html | 2018-04-25 16:13:16 | |
| 0000929940-18-000015.txt | 2018-04-25 16:13:16 | |
| a042520188-k.htm | 47051 | 2018-04-25 16:13:16 |
| a042520188-kxexhibit991.htm | 530766 | 2018-04-25 16:13:16 |
 aspentechnologylogoa23.jpg | 12241 | 2018-04-25 16:13:16 |