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| 0000929940-18-000034-index.html | 2018-10-24 16:21:29 | |
| 0000929940-18-000034.txt | 2018-10-24 16:21:29 | |
| a102420188-k.htm | 36649 | 2018-10-24 16:21:29 |
| a102420188-kxexhibit991.htm | 324491 | 2018-10-24 16:21:29 |
 aspentechnologylogoa29.jpg | 12241 | 2018-10-24 16:21:29 |